IIRC the ball pivot bellhousing always had the long fork but early A-bodies always used the short fork.
I used a small block ball pivot bellhousing in a 66 Valiant and the fork travel was right in line with the torsion bar and barely cleared the torsion bar but it did work.
So is there a short ball pivot clutch fork? This is new to me so Im not sure which fork I'll need. The A833 OD has its own special bellhousing because of the larger bearing retainer. Should I be looking for an early A body small block clutch fork?