Some background: I'm retrofitting a 71 Buick 350 engine from a 71 Skylark into my 64 Special. I'm also converting the 64 Special to a manual 4 speed. So, I purchased a flywheel from NAPA for a 71 Skylark with a 350. I also purchased the clutch kit for 71 Skylark with 350 BUT kit has the fine-spline clutch. I'm retrofitting a coarse-spline Saginaw 4 speed. So I returned the 71 clutch kit and thought I was smart to order a 68 Skylark 6 cylinder 3 speed clutch kit because that would assure the coarse spline clutch. It was, but I think the 68 parts are a 10.5" clutch, while my flywheel is an 11" clutch (the 68 pressure plate mounting holes' bolt circle was too small for my 71 flywheel). Just want to see/confirm that if I instead order the clutch kit for a 1970 Skylark with a 350 I'll get the coarse spline clutch and the proper 11" clutch size (sorry but I don't recall if the NAPA had the details of the clutch diameter on their computers). So I'd like to know if my plan would work. Nothing fancy or high power with my car it's only a stock skylark 4 barrel motor so I'm not looking for Centerforce or other stronger aftermarket parts. Thanks for any help.