Deuce: Those long, hefty arms look great for transferring the push but I wasn't sure if the design was completely obsoleted by later ones. For straight-line travel, it looks like the harder it shoves, the more it has to lift the car. If I can find my dream donor car, a '76 Cadillac, I'll probably adapt its rear end to this setup instead of getting a Ford 9". The rear track of that Caddy is just 1.7" wider than the Olds. Or were you talking about somehow putting the Ford 9" into the existing housing?
powerrodsmike: The harsh ride is what I want to avoid. Easy spring changes sounds good, in case I get the itch to find out what it will do in a 1/4.
When I took the shock links off and the panhard bar loose, the frame jumped up quite a bit, with the right side considerably higher than the left. I was hoping modern springs might have some magic to be shorter without being harsher. If the frame has to be notched to get both lower and retain a good ride, so be it! The front suspension does worry me. Images attached.
OneMoreTime: I will make sure the frame is at least as strong when finished as before. I don't mind intruding on the trunk space. To mock it up and find out how much the frame has to be altered, I need the donor car on hand, at its normal ride height?
I know where I want to end up with this car; it's getting from here to there that I don't know about. There's a huge difference between putting a car back to specs in a service manual and creating a unique mutant. Without you folks being willing to share what you know, I'd have been lost down any of multiple blind alleys by now.