My old 87 K100 LT has given up its final drive splines/ driveshaft at 96,000 miles. I've found a decent priced final drive, splines look good. Now I need a driveline. My question is are all the mono lever drivelines the same 20 spline units.Asking because I found a nice unit out of a K75 but am unsure if K75 driveline will fit. I know the 1985 drivelines are 16 spline. Other than that I think the the K75 driveline should fit, but not 100% sure. Anybody know?