my $.02 on the CPP 6 lug disc conversion (bought and completed in November, 2009, by me, a car hobbyist):

Supplied instructions are really bad. They have a 3 page tech write up on their website that is considerablly better, but still not great. This thread is helpful to fill in the instruction "gaps". I thought it was curious that they didn't supply any torque values. The caliper brackets did bolt right on with the supplied hardware (and the unlabelled brackets go with the slight bend inwards) - no drilling was required to mount the brackets onto the spindles.

The conversion with the supplied 3/16" spacer plate is not enough space to clear the factory rim. I called CPP for tech support with the question about adding a second spacer plate to resolve the issue and the initial answer I got was "most guys buy different rims". A little more discussion and they said to make sure I have room in the wheel wells and enough lug nut thread before going that route. They never really said go for it or don't do it...

I'm not a fan of spacer plates, and two 3/16" plates will get the clearance but not sure if it is safe or smart.
Any thoughts on that? I could also angle grind the rims in the same area that a previous poster linked to get the clearance - that is where the interference occurs on my kit - is this an acceptable way to get clearance? - I'd really prefer to use stock wheels and bias tires.

EDIT: I put 2 shims on the one side (since the kit comes with two shims) - all tightened up, the stock rim clears the caliper and there is 2-4 threads on each of the lugnuts. It is a simple solutioin, but I am still curious if it is also a bad idea

Last edited by marklaken; 11/23/2009 9:23 PM.