Copyright © 2006 Raven Engineering Inc ®
| American Axle Mfg. | Creative Concepts | International Truck | RCR Racing |
| Aaron's Automotive | Creative Technologies | ITW Hofmann | R.E. Phelon |
| Accuride | Cummins | Judricks Enterprises | Revcor, Inc. |
| Advanced Machine | Dale Earnhardt | Kellogg Crankshaft | Rockford Powertrain |
| Air-Drive | Daleo Machining | KIA Motors | Roush Industries |
| Airmaster Fan Co. | Dana Corporation | Krauss - Maffei | RPM Carbide Die |
| American Sunroof | Daimler Chrysler Corp. | Krupp Gerlach | SAK Engineering |
| Amcast Automotive | Defense Supply Center | Kukil Mechatronics | SCFM Corporation |
| American Cooling | Delphi | Lintool Mfg. | Seshin Mexico |
| A.O. Smith | Diamond Tool Supply | Magna Powertrain | Shear Tool |
| Arbomex | Eaton Corporation | Mark Williams | Sky-Tek |
| Arctic Cat, Inc. | Emerson Electric | Mattoon Precision | Southwest Marine |
| Arvinmeritor | Eptec | McLaren Performance | Spinic Manufacturing |
| AT Kearney | FCC Limited | Menard Engine | SROKA |
| Autocom Mfg. | FEV Test Systems | Mennie Machine | St Paul Metalcraft |
| Avenger Monster Truck | Findlay Industries | Mercury Marine | Summit Aerospace |
| Avon Gear Co. | Fix 'N Go Auto | Metaldyne | Super Abrasive |
| Baird Brothers Sawmill | Ford Motor Company | Michigan Scientific | T&T Tooling |
| Ballard | Fruedenberg Nok | Microgage Inc. | Team Industries |
| Bare Knuckle Chopper | Getrag Corporation | Midwest Mfg. | Tex Racing |
| Barton Malow Rigging | GKN Automotive | Mod Tech Industries | Textron Turfcare |
| Bombardier | GKN Sinter Metals | MSM | Thibado |
| Borg Warner | General Motors | MSM Machine Works | TKA Atlas |
| Brinly-Hardy | Goldens Foundry | MSX International | TRW - Toledo |
| Bronson Precision | Goro Lotu | Multiplex | Unimotion Gear |
| C & F Grupo | Goros Castex | New Holland | Unit Parts Co. |
| Callies Performance | Grupo Industrial | Newport News | US Electrical Motors |
| Caribe Aviation | Hamilton Sundstrand | Norton Manufacturing | Universal Tech. Serv. |
| Cemtol Manufacturing | Hanbando Balance | Owens - Corning | Valenite Gaging |
| CEP Products - Mx | Heller Industries | P&P Manufacturing | Vantech |
| Cherry Valley Tool | Hillsdale Tool | Paravis Industries | Vehcom Mfg. |
| Chip Ganassi Racing | Honda | Parker Compumotor | Visteon Corp. |
| CNH Industrial | Industrial Balancing | Parker Hannifin | Wayne Brooks Sales |
| Continental Teves | Inland Diamond | Protech Industrial | Wetherill Associates |
| Coupling Corporation | International Ent. | Quadrad Mfg. | Worldwide Aircraft |