Here's the
thread I started a while back but it sure is confusing when I re-read it. I would be happy to get you measurements this evening of my K5's driveshaft installed with the 4 speed, NP205 and 4" lift.
As a side note, when I swapped in the NP205 in place of the Dana 20, I found the transfer case crossmembers must be different. I had to add 1" spacers to drop the Dana 20's crossmember down to be able to fit the NP205 in place.