The PO had a guy do a lift on my fj, he says they are fj60 springs. It rides real rough, I can clear 33's if not 35's right now, though I'm still running the 235's. They are a 6 leaf pack with what I think is the "millitary wrap," top two leaves are wrapped around the shackle bolt, plus it has extended shackles, 5-1/4" in. bolt center to bolt center on shackle. I'm sure it don't help the it still has OEM shocks that are acting as droop stops on level ground, but I test drove a piece of S*** '78 in MO that had a 4" add-a-leaf that was 1/2" thick shoved into the middle of the factory spring pack with 33's and it road alot smoother than this. I'm ready to yank a couple leaves, so I guess the question is...out of the 6, which should I pull out. There is a perfect "stagger" on all six leaves. Thanks before hand.