Drive Shaft Lenght - info request

[BubbaGreen]

I need some info...
I would like someone to measure there drive shaft if they have the following configuration:
C-10 Short bed w/coils, 12bolt rear end, 350 engine in front most position and 700R4 trans using stock crossmember. Stock (non-lowered) suspension.
-OR- at least confirm this for me:
I have measured the distance from the seal on the 700R4 to the center of the u-joint clamp on the differential yoke and that measured 59-1/4". This is the measurement of just the chassis with engine/trans mounted so the suspension is pretty much at its most extended position...how much shorter does the drive shaft need to be shorted for, when the rest of the body is placed on the chassis?
Any suggestions are welcomed. Thanks!!!!