| Business | Phone |
| American Motor Field 27328 Woodson Rd, Conroe 77385 | (281) 298-7717 |
| Desperado Motor Racing 1925 Longmire Rd, Conroe 77304 | (936) 788-7788 |
| Engines Inc-Southwest 11133 Interstate 45 S 270, Conroe 77302 | (936) 441-5592 |
| Industrial Armature Works 1009 S 1st St, Conroe 77301 | (936) 756-5445 |