| Ateco Automotive | 27840 Concrete Drive, Unit B | Ingleside | 60041 | 847-623-2737 |
| Automotive Machine | 1000-04 Derby Street | Pekin | 61554 | 309-347-7136 |
| Car Shop | 421 12th St. | Moline | 61265 | 309-797-4188 |
| Class One | 1030 Riverside Dr. | Freeport | 61032 | 815-235-1350 |
| DC Automotive Machine | 1137 B. 18th Ave | Rockford | 61104 | 815-965-9024 |
| Dixon Automotive | 345 N. Skokie Highway | Gurnee | 60031 | 847-244-2235 |
| DSS Competition Engines Inc. | 3550 Stern Avenue | St. Charles | 60174 | 630-587-1169 |
| Engine Rebuilders and Supply Inc. | 4010 W. North Ave. | Stone Park | 60165 | 708-338-1113 |
| Gustaf Auto & Machine | 4000 4TH Avenue | Moline | 61265 | 309-762-2323 |
| Hughes Engine | 23334 Wiegand Lane | Washington | 61571 | 309-745-9558 |
| Opel Engineering | 1528 Burgundy | Streamwood | 60107 | 630-837-2900 |
| Performance Motor Sports | 206 West Center Street | Sandwich | 60548 | 815-786-6998 |
| Performance Motorsports | 1350 Peterson Industrial Dr. | Greenville | 62246 | 618-664-4767 |
| Pfeiffer's Engine Specialities | 1798 Smokey Hollow Road | Freeport | 61032 | 815-233-2267 |
| Precision Engine & Machine | 821 Surrey Ln. | Sleepy Hollow | 60118 | 847-903-9585 |
| Southwest Autowerks | 3827 Maple Avenue | Brookfield | 60513 | 708-387-7100 |
| Speed Performance Engineering | 1205 Karl Ct. Ste. 103 | Wauconda | 60084 | 847-487-7223 |
| The Hot Rod Shop, Inc. | 4425 Charles St. | Rockford | 61108 | 815-227-5424 |
| Villani's Speciality Auto Parts | 5803 N. 2nd Street | Loves Park | 61111 | 815-877-5200 |
| White's Pit Stop | 2454 E. 170th | Lansing | 60438 | 708-418-8400 |
| Wolfe Engines | 3108 Louis Sherman Drive | Steger | 60475 | 708-754-9500 |
