Thanks, Tony
I know about setting up pinions and engine angles on "normal" vehicles, but I'm getting conflicting info on the 1/2 ton '60 thru '69 Chevy pickups that have "ladder bar" rear suspension and coil springs.
On most vehicles the rear end moves up and down at the same angle, but these Chevies, like the old Fords up thru '48, change slightly, only at the front joint, as the long arms of the "ladder bar" pivots up near the transmission. (I'm sure Chevrolet didn't call 'em ladder bars....maybe radius bars, or control arms, I can't recall)
I'm leaving for a week or so, but if you can post anything you have on this particular series of trucks, I'll read it when I get back. I appreciate your help and didn't want to go without thanking you for it.