All GM trannies use the same bolt pattern, no matter if small, big or six block. Wait...on rear drive, Wait.....well trucks anyway. Wait, not some of S-10 little engines either. Anyway, some have diff flywheels tho. Diff size clutches maybe. Most should have same trans mount holes up to about 92 on trucks and the Camaro's with the T-5 five speed I think "leans" one way. SO, If I haven't confused you, I have me, you should be safe with muscle car type trannies and bellhousings. Then there's mechanical and hydraulic clutch activation too. New ones have the throw-out bearing and clutch actuator as one with line running to it, no levers to pedals.
