A 440 A-Body... that can handle?

Hey BTW Jim, and sorry to hijack the thread guys, but what were those stacks made from? I've heard of adding late '80's model D-100 leaves to factory spring packs to reduce roll and sag, it kinda got me wondering what he was using.

I thought of that route, then I said screw it and went with two passenger side SS springs. Cheap and gets the job done.