When I bought my 70 SS 454 el camino 5 yrs ago it had sagging springs and it leaned to the right. I put brand new Spicer stock height springs on all 4 corners and it still leaned. :mad: Being that I didn't have lots of money at the time I remedied it with seperate lines on air shocks (I know air shocks suck)I took it to a friend of my who owns a front end shop and put it on his frame machine. Part of the problem was the frame was tweaked in the right rear by 1/4".The body was off 3/8" on the right. He suggested swapping the springs right to left. I've heard of this before but was like some other opinions.

Check the body mount biscuits. Those on the low side could be collapsed,

I forgot to add this in my last post. Replaced all of those too. What a fun job that was. Won't ever do another one Thanks for the idea Rick