| Transmission Specs |
| Transmission | Torque Rating | 1st | 2nd | 3rd | 4th | 5th | Year |
| T5 Non-World Class | 265 lb-ft | 2.95 | 1.94 | 1.34 | 1.00 | 0.63 | '83-'84 Mustang |
| T5 World Class | 265 lb-ft | 3.35 | 1.93 | 1.29 | 1.00 | 0.68 | '85-'89 Mustang |
| T5 World Class, late | 300 lb-ft | 3.35 | 1.93 | 1.29 | 1.00 | 0.68 | '90-'93 Mustang |
| T5 Cobra Z-spec | 330 lb-ft | 2.95 | 1.94 | 1.34 | 1.00 | 0.63 | '93 Cobra |
| Tremec 3550 | 350 lb-ft | 3.27 | 1.98 | 1.34 | 1.00 | 0.68 | '95 Cobra R/aftermarket |
| Tremec TKO | 425 lb-ft | 3.27 | 1.98 | 1.34 | 1.00 | 0.68 | Aftermarket |
| Tremec TKO II | 475 lb-ft | 3.27 | 1.98 | 1.34 | 1.00 | 0.83 | Aftermarket |
D&D PerformanceD&D can meet all of your late-model drivetrain needs, covering a full line of T5, Tremec, and even T56 gearboxes, parts, and accessories. The Z-spec T5 is available from D&D as a new assembly, as is the Tremec 3550, TKO, TKO Plus, and TKO II. D&D also offers shifters, clutches, driveshafts, and just about anything else you'll need to convert your classic to a late-model overdrive manual trans, or simply to upgrade or service your late-model performance car. D&D Performance, Wixom, MI, 248/735-6220, www.ddperformance.com
Forte's Parts ConnectionForte's offers a diverse array of performance parts for various makes, but is best known as a manual transmission one-stop shop for replacement parts, complete gearboxes, and trans-swap parts and pieces. Today, Forte's carries a full line of overdrive manual transmissions, including the Z-spec T5, the Tremec 3550, TKO, and TKO II, plus Forte's also offers every version of the Tremec, from the typical Ford small-block applications to swap-oriented gearboxes for GM applications, including specific kits for third-generation Camaro/Firebird, plus the Ford FE, Mopar small- and big-block, and even AMC. Also available are mid-shift conversion parts for Tremec boxes to relocate the shifter, application-specific shifters, driveshaft components, crossmember conversion parts, clutch linkage, speedometer cable parts, and much more. Forte's Parts Connection, Burlington, MA, 781/273-9900, www.fortesparts.com