Good grief! An 18 spline for 500 bucks and you don't own it yet?!!! Buy first ask questions later, Lol! Agree with Toolman, you could buy 3 or 4 of what you really need when you sell that one.
Lol! It ain't going anywhere. The guy was going to build a 68 Dart Hemi replica, but the project fell through. He is a chevy guy so it's just sitting there. I totally forgot he had it. Ill own it Friday, I'm sure. Ill then need to make a parts list for the 4 speed conversion.