| Business | Phone |
| Amtex Cylinder Head & Casting 1412 N 22nd St, Tampa 33605 | (813) 248-9429 |
| Turley's Automotive Machine 10134 Fisher Ave, Tampa 33619 | (813) 657-8522 |
| Precise Engine & Machine Works 1201 E Mohawk Ave, Tampa 33604 | (813) 237-1414 |
| National Cylinder Head Exch 4408 N Thatcher Ave, Tampa 33614 | (813) 870-6340 |
| Miguel's Automotive 5415 Baptist Church Rd, Tampa 33610 | (813) 621-4187 |
| K & S Cylinder Head Exchange 4710 Causeway Blvd, Tampa 33619 | (813) 248-3888 |
| Joe's Precision Racing Engine 4304 N Florida Ave, Tampa 33603 | (813) 238-1129 |
| Eisele's Automotive Machine 9220 E Broadway Ave # B, Tampa 33619 | (813) 621-2979 |
| Jack's Automotive Machine 13215 N Nebraska Ave, Tampa 33612 | (813) 979-0088 |
| Joe's Precision Racing Engine 4304 N Florida Ave, Tampa 33603 | (813) 238-1129 |