Since insurance has decided that my car is totalled, they want to keep it and all of the mods done to it as well. They're going to pay me back the worth of the modifications with depreciation included since the time that I bought them, so in order to not lose money I'll have to buy used (all of my parts were bought new).

Is there anything to look out for when buying the following?:

-Ground Control Coilovers (I don't know how I'll find used ones with custom rates)
-Koni Yellow (externally adjustable) shocks
-Suspension Techniques Rear swaybar
-Kosei K1 Racing wheels

Thanks in advance.

 

Wheels -> make sure they are straight...not bent.
Shocks -> make sure they are not leaking, when you compress you don't want to hear any squeeky noises (moisture inside)...good thing is that they are rebuildable.

 

GC coilover kit is pretty robust. just keep in mind if your paying for springs with springrates you really dont need.
Koni's, i wouldnt suggest buying used shocks, you can damage them so easily, but figure in subtracting the cost of a rebuild from the cost of what you think used koni's are worth and you should be at the right price.
ST swaybar, hunk of metal, but the bushings may be worn. the squeek most of the time anyway.
Wheels, yeah, just make sure theyre straight and cosmetically in good shape. paint missing pretty much shows the level care.