DC- I installed a 79 super t in a auto 69 ragtop some years ago. I just rebuilt a muncie and since the clutch needs replaced im gonna install this.The major differnce is the yoke on the drive is gonna be different, the splines on the clutch is different. Ya gotta use the offset shifter to clear the console, if no console you can use either shifter however it bolts to the transmission with different 'adapters'I used a super street- stock even a shifter out of a goat they all worked-but and this is a big but the clearance of 'some' linkage to the floor tunnel is tight. If ya dont want to saw or Bang with a big hammer, stay with stock everything.To sum it up, it will work, its not all to radical and the difference is in the details. Good Luck- MIK