Well what is the biggest shim you have seen for sale or actually used? Think I am going to have to get some Zerorates made and angled... The S10 has quite a bit of angle on the old leaf springs. I haven't put a guage on it yet but I'm expecting 10* or more... Problem is this is just what I had to build. Didn't want to drop the front brackets anymore and hurt approach angle, and have to put the shackles where I have to put the shackles.