Unless you are concerned with having original springs, I would have new ones made. I have had trouble with reared springs lasting for any length of time unless they can re heat treat them.Even adding a leave to old don't seem to last.They all ways seem to settle after a while.
This is one one tons, but I would assume a panel would be comparably under sprung as well.

 

Yes, Julie has leaf springs on his truck - saw a picture in another thread (of the truck, not him) .

I'm considering having Tony @ North County Spring build custom leaf springs. He did the work on Julie's.

I have completed the drivetrain swap and have lots of power 405 horse / 425 ftlbs. Axle wrap is HORRIBLE and ride quality is worse with the single leaf posies which are installed, now.
Tony suggested custom leafs and flipping the rear shackle for more curve to the leafs and then fabricating and outboard - of - the - frame shock perch.

I had been considering, until talking to him, some form of 4-link setup and doing the install / fabrication myself. My goal is a good ride quality and decent handling, though this is no track vehicle. Just a cruiser. I'd like it to hook up, too.

Tony recommended a custom leaf spring kind of like Chrysler did called a J-spring. In the front, the leafs are stacked closely to minimize wrap. In the rear, they are spaced further to offer ride quality.

This would have better packaging, a bit lower cost, but similar to me and be simpler to install than a 4-link.

I'm now torn. Tony seems very confident he'll deliver what I'm after.

thoughts?

Doug