Next dumb question,
I used drdiff's calculator for tube length with my axles, and subtracted a half inch per side for spool engagement.
Will it hurt anything to have equal length tubes with a truck 60 pinion offset in a factory style chassis?
All stock engines with reg engine mounts are moved to the pass side, some quite a bit. 8 3/4 pinion offset is the most, dana is less, reason one tube is longer. The tunnel is also offset to the right. I centered the dana housing in my 64 and didn't have a problem, there is wiggle room to line it up, front to back. No more misalignment than the up and down movement of the drive shaft. I wouldn't cut any axel, unless they touch, since the splines go thru the spool
