If I remember correctly the ford had tapered bearings where the GM did not. Two reasons GM did not put T5s in 350 cars. One, previously stated, 340tq + 3500# + 3.23 gear is bad. Just ad a clutch dump and boom! Second was emissions regulations. This is why newer T56 has the skip shift solenoid. In a light S10 and a mild 350 the T5 will probably be fine especially if youre not LSD or tall geared.