| Business | Phone |
| Barron Cams 4125 S 68th East Ave # K, Tulsa 74145 | (918) 665-0013 |
| Car-Fleet Machine Shop 4141 S 68th East Ave # B, Tulsa 74145 | (918) 665-3665 |
| Carbone Racing 3907 E Admiral Pl, Tulsa 74115 | (918) 835-6596 |
| Carter-Davis Machine Shop 102 S 111th East Ave # B, Tulsa 74128 | (918) 437-2939 |
| Kent Johnson Automotive Machn 737 E Admiral Blvd, Tulsa 74120 | (918) 587-4194 |
| Len Williams Auto Machine 739 S 83rd East Ave, Tulsa 74112 | (918) 836-7583 |
| Lucito Machine Shop 9422 E 55th Pl, Tulsa 74145 | (918) 622-9420 |
| Viper Precision Machine 3517 N 41st West Ave, Tulsa 74127 | (918) 425-5022 |
| Rothhammer Cylinder Head Shop 1642 E 2nd St, Tulsa 74120 | (918) 582-4773 |