| Business | Phone |
| West Bearing & Parts 1131 Nw Everett St, Portland 97209 | (503) 227-6577 |
| Aluminum Head Rebuilders 4701 Se 24th Ave # Z, Portland 97202 | (503) 230-0852 |
| Bearing Service Co 1040 Nw Everett St, Portland 97209 | (503) 222-1367 |
| Speed R Lewis Auto Mach Works 9009 Se 74th Ave, Portland 97206 | (503) 771-9381 |
| Cylinder Head Specialties 4444 Se 27th Ave, Portland 97202 | (503) 232-1148 |
| Dan Hall's Automotive Machine 1831 N Killingsworth St, Portland 97217 | (503) 289-5015 |
| Dan's Cylinder Head Co 4831 Ne 105th Ave, Portland 97220 | (503) 253-7686 |
| Precision Engines & Balancing 5940 Se 111th Ave, Portland 97266 | (503) 760-6996 |
| Fast Automotive Machine 2360 Se 82nd Ave, Portland 97216 | (503) 771-9133 |
| Ott's Machine Shop 4860 Se 82nd Ave, Portland 97266 | (503) 771-2346 |
| Hutchins Performance Machine 5740 Sw 56th Ave, Portland 97221 | (503) 246-7144 |
| Mike's Auto Parts Inc 12505 Nw Cornell Rd, Portland 97229 | (503) 646-0623 |