- BLP Products Inc
- Bullitt Race Cars
- Buterbaugh's Tan Line
- Butina & Assoc
- Butina & Assoc LTD
- Butina & Assocs
- Butko Body Repair
- Butler Agway
- Butler Alcohol Countermeasures
- Canton Manufacturing
- Chuck Mallett Inc
- Coach's Chassis
- Competition Components
- Coy Miller Race Engines
- Csr Performance Products
- Davis Step Headers
- Dedenbear Products Inc
- Design Products
- Design Products
- Flight Mfg A & R Racing Prods
- Follner Racing Enterprises
- Garner Industries Inc
- J R Mfg
- Joe Rhyne Racing
- Klarr Racing Engines
- Larry Shaw Inc
- Lee Manufacturing Co
- Magnum Racing Components
- Mark Williams Enterprises Inc
- Maxim Inc
- Midvalley Engineering Inc
- Mike Magiera Inc
- Naylor Racing Engines
- Nicholson Racing Products
- PCC Auto
- Performance Concepts
- Precision Alloy
- Race Works Inc
- Racequip Safety Systems
- Randercar Racing Enterprises
- SCS Fabricating
- Southern Precision Corp
- Tesar Engineering Racing Engns
- Vanderley Racing Engines
- Wilson Manifolds
