Centerforce Dual friction in 11.00 diameter I recommend.
Its expensive but will last.
Light pedal disengagement for the Wife also.
Super tough clutch too.
You have a Muncie from 1963- 1970 it has 10 - spline input shafts.
No 26-spline input shaft like 1971-74.
1970 M22 Rock crusher Muncie cars had the 26-spline input shaft also.
simply because a clutch disc , and throw out bearings are reasonable cheap compared to the time and effort needed to replace them, should either fail,
its almost always a good Idea to have the disc, and throw-out bearing,
replaced and if the pressure plate,looks to be well used,or
is suspect, Id have it checked out, resurfaced and in most cases the spring(s) replaced by a local clutch rebuilder
when I was racing I was on a first name basis with one of the better local clutch and brake pad rebuilders
because I was in there every few months.
Depending on what shape the flywheel is in, I would replace pressure plate, disc, throw out bearing and have the flywheel resurfaced and have no doubt in the clutch reliability.