Best ifs kit? rms, hdk, gt suspension, or magnum force?

I have used the "budget conscious" eBay special brakes....and the Wilwood brakes.....all have been within .010 (nominal) on moving the hub.....most make no change whatsoever. The only ones that pushed the hub out were a set of ancient Wilwoods salvaged off a Magnum Force K setup.

This sounds a lot like my Barracuda build. O:) I have driven my car with the magnum Force setup and I can tell you its not what I liked. Going straight a 1/4 mile at a time its fine. I dont recomend it for street use but thats just me.
I love my HDK. period. If swapping stock for IFS I wouldnt use anything else.