OK... So the car will be totally complete when I jack it up for the suspension and exhaust demo and upgrade. I have the Pontiac lift point engineering diagrams showing the correct spots to support/jack it on the main frame and rear body. I wont be removing the rear end, but will be using one of the jacks to support it when I unbolt the springs. I'm figuring that the weight distribution wont be terribly different, less a 150lbs of leafs and shocks out of the rear, so I shouldn't have any tipping issues. Problem I may have is that the rear support points per GM are very close to the front leaf spring cup-mount-things (tech term). So I'm not sure about my wood block stack plan vs socket wrench... When I get this set up, I'll revisit this with a picture. It'll be strong, and you'll likely get a good laugh.
'68 400HO Coupe, 4 spd, 259 interior, Windward Blue. My other car's a Johnson 15 outboard on a '61 Starcraft rowboat... Just sayin'.