Yuo are correct, look for a 10 bolt 63' back to 54'. The 10 bolts are open rears and bolt right in, even the spider gear and axles have same spline, thrfore same lug pattern and numbers, thus same wheels bolt up.
Make sure we are on the same page here, for your calcs, not the wheel/rim size (15" or 16") - you need the true tire height, from ground to top of tire for height wheel. Put a plumbers level across width of tread and measure from ground to bottom of level, this is true ride heght of tire. This number is the number put into the formula. Like we said, could be just a matter of a differnt tire size. 50's have shorter wall and thus short tires, up to 60, 70, 75, 85's.
Have you measured tire height this way?
Cavebull
