Camaro Ridetech 4 link cradle

[Tinker]

Mine also would not suck up tight to the rails on my 69 Firebird. I made some shims out of 1/8 inch aluminum to fill the gaps on the bottom side of the frame. In my subsequent teardown for the next chapter, I came across some loose screws. It seems the self tappers don't have much to bite into on a 50 year old frame that was thin to begin with. I have installed nutserts in the frame and use grade 8 bolts to be able to really snug it up now.