I have a g-force t-5 with the upgraded case, face-tooth engagement and straight cut gear set. I have been 10.30s in a 2940lb street/strip mustang. This is all motor 331 combo, i would definetly go with the g-force before the tko.
Stephen Johnson #2162
Horace Johnson #2167
SS/D 427 Ford Fairlane NHRA-IHRA
