I just purchased front and rear FJ60 axles and springs and I have a few questions. The rear main leaves on the 60 springs are cracked so they are no good but the front springs are fine. I like the larger bushing diameter of the 60 springs because my 40 bushing squeeze out or wear through after 2 or 3 wheeling trips. I have greasable bolts and poly bushings but they still fall apart. I was going to remove the 2 main 40 leaves and replace w/ the 2-60 main leaves and redrill the 60 leaves, this is all on the front springs by the way. Are 60 and 40 front leaves the same length? I measure and they both seem to be about 44" center eye to center eye. What is the best way to drill these hard ass springs? I was going to use the 60 rear springs on my 40 but the frame rot is so bad from the rear cross member back that I will probably cut it all off and go 1/4 elliptical, air shock or coil springs. Well that is another thread all together and at least not until the late fall. Any help appreciated.