So picture attached shows three set of springs. I think I will use the short Set with an xrta insulator too give me the ride height I want.Only concern is that those are quite a bit shorter then the stock ones, was wondering if I went over a big bump at 40 MPG if these springs could come out of their mounting position?? Anyone? Longest set is stock floor to fender well is 24.5 Shortest set gave me 23.5 middle set gave me just shy of 23 (too low)
If you can't remove the short springs with the rear suspension bottomed out against the shocks, then you won't have any problems. Now.. If you can install them with the shocks connected and not have to compress them at all, then I'd forget about it.
The shortest one looks as though its a Hotchkis spring, and if so, I hit some big bumps at speeds much higher than 40 and never "lost" a spring with my low-weight Skylark. I was using KYB Gas-A-Just shocks. Dont ask why I hit big bumps at those speeds.
If I put the floor jacks on the frame and let the rear end hang down. The springs do not maintain contact with the top mount. I cannot completly remove them but I can move them around. Mabe best option is to use the middle ones with a spacer. Or is the weight of the car enough to hold everything together.