how do I adapt 5x4 with 1/2"X20 stud to SS cragars

I give up, took the lugs and tapped them to 1/2-20 and put the wheels on, but the 14" wheel hit the caliper so we had to space them 1/16" and the stud couldn't make it into lug head. 2 of the lug heads sheared off in the socket tightening them. I can only imagine what the stress of a hard turn would be. So if anyone's interested I will have a pair of brand new 215R70-14 BFG T/A radials on decent SS cragars for 5X4 7/16" studs and another pair same but not as good shape, (but will clean up nice). Wilwood needs to cover ALL the options, even the bastard 5X4 - 7/16 for 14" rims! BTW they sent 5X4 spacers that don't fit 5X4! Wilwood gets 2 fails for that kit!