I'm going to look at a 2nd hand Bilstein B12 kit for my ST at a car breakers tomorrow, and was hoping some of you kind souls can give me some tips on what to look for to make sure that I'm not ripped off.

Obviously, I know to check if the dampers are leaking in any way, and that there's no cracks or breaks in the springs, but that's as far as my knowledge goes at the moment.