Arizona Speed and Marine
http://www.azspeed-marine.com/

Beck Racing Engines — Chevy specialist
www.beckracingengines.com/

Bennett Racing — Ford specialist
http://www.bennettracing.com/

Billet Racing Engines — VW-based drag racing engines
http://www.billetracing.com/

Keith Black
http://www.keithblack.com/

Blackstone Motorsport
www.blackstonemotorsport.com/

Borowski Race Enterprises
http://www.borowskirace.com/

Jim Butler Performance — Pontiac specialist
http://www.jbp-pontiac.com/

C&C Motorsports — Ford Boss 429 specialist
www.candcmotorsports.com/

California Precision Racing, Inc.
http://www.cpracing.com/

Callies Performance Products — SBC
http://www.callies.com/

Chevrolet Performance
http://www.chevroletperformance.com/

Clifford Performance — "6 = 8"
http://www.cliffordperformance.net/

Dallas Export Sales — SBC, BBC and SBF specialist
http://www.dallasexportsales.com/

Duffee Motorsports — Ford engine specialist
http://www.duffeemotorsports.com/

ECR Engines / Earnhardt-Childress Racing — SBC specialist
http://www.ecrengines.com/

Esslinger Engineering — Four-cylinder Ford specialist
http://www.esslingeracing.com/

Ford Racing
http://racing.ford.com/

Fowler Engines — Blown fuel engine builder
http://www.fowlerengines.com/

GM Powertrain
http://www.gmpowertrain.com/

Hansen Racing Engines
http://www.hansenracing.us/

Harvey Racing Engines — SBC
http://www.hre.com/

Hekimian Racing Engines — SBC and BBC
http://www.hekimianracing.com/

Holman Moody — Ford specialist
http://www.holmanmoody.com/

Jasper Engines
http://www.jasperengines.com/

Kaufman Racing Equipment — Pontiac specialist
http://www.krepower.com/

Ken's Speed and Machine — Pontiac specialist
http://www.pontiacdude.cc/

Klein Engines
http://www.kleinengines.com/

Koffel's Place — Mopar specialist
http://www.b1heads.com/

Bill Kuhlmann Racing Engines
http://www.billkuhlmann.com/

Lesco Automotive Machine
http://www.4-lesco.com/

Lingenfelter Performance Engineering
http://www.lingenfelter.com/

Lizzard Racing
http://www.lizzardracing.com/

Mach Development
http://www.machdevelopment.com/

Machine Tech Racing Engines — Chevy LS1 specialist
http://www.machinetechracing.com/

Jack Merkel Performance Engines, Inc.
http://www.merkelengines.com/

Greg Merrick — Pontiac specialist
http://www.pontiacengines.net/

Bill Mitchell Hardcore Racing
http://www.theengineshop.com/

Mondello Performance Products, Inc. — Oldsmobile specialist
http://www.mondellotwister.com/

Ohio George Montgomery
http://www.georgesspeedshop.com/

Mopar Performance Parts
http://www.mopar.com/

Pat Musi Performance
http://www.patmusiperformance.com/

Nickens Brothers Racing Engines
http://www.nickensbros.com/

Ohio Crankshaft
http://www.ohiocrank.com/

Patterson Racing
http://www.pattersonracing.com/

Ed Pink Racing Engines
http://www.edpink.com/

Racer Walsh — Ford specialist
http://www.racerwalsh.com/

Reher-Morrison Racing Engines
http://www.rehermorrison.com/

Steve Schmidt Racing Engines
http://www.steveschmidtracing.com/

Self Racing Engines
http://www.selfracing.com/

Shafiroff Race Engines
http://www.shafiroff.com/

Carroll Shelby Enterprises
http://www.carrollshelby.com/

Sonny's Racing Engines
http://www.sonnysracingengines.com/

Spotts Performance — Pontiac specialist
http://www.spottsperformance.com/

The Stovebolt Engine Company — Chevy inline six specialist
http://www.stoveboltengineco.com/

Street & Performance
http://www.hotrodlane.cc/

Truppi-Kling
http://www.truppi-kling.com/

Vinci Hi-Performance — LS1 and LT1 Corvette engine specialist
http://wwww.vincihiperformance.com/

Engine Developments, Ltd. — Formula One and Le Mans engines
http://www.engdev.com/

Engine Factory — Muscle car specialist
http://www.enginefactory.com/

Ryan Falconer Racing — V-12 engines
http://www.falconerengines.com/

Gaerte Engines — Sprint car engine builder
http://www.gaerteengines.com/

McLaren Performance Technologies — Sports racing engine builder
http://www.mclarenperformance.com/

Minister Racing Engines, Ltd. — Sports racing engine builder in the United Kingdom
http://www.minister-power.com/

Zytek Engineering, Ltd. — British Touring Car, Formula 3000, and IMSA Supercar engines
http://www.zytek.co.uk/

Cad Company — Cadillac 500 specialist
http://www.cad500parts.com/

Cadillac HotRod Fabricators — Cadillac Northstar and Olds Aurora engine specialist
http://www.chrfab.com/

Cadillac Performance Parts by Potter Automotive
http://www.cadillacperformanceparts.com/

MTS - Maximum Torque Specialties — Cadillac performance specialist
http://www.500cid.com/

Schraders Speed & Style — Cadillac 500 specialist
http://www.schradersspeedandstyle.com/

CH Enterprises — Mr. 409
http://www.mr409.com/

Rebuilt Crate Engines
http://www.rebuiltcrateengines.com/

Show Cars Automotive — Chevy 348-409 specialist
http://www.show-cars.com/

Flathead Jack — Ford flathead engine builder
http://www.flatheadjack.com/