Ok guys I need to know who is runnign at least 315/50 radial, with what racing rim, size and back spacing? We are about to order the super lights, but the only come in 4.5 back spacing for the 315/50 and they may not fit ? Do we need to go with difrnt wheel and what back spacing. Thanks, conelys is almost done with my stage 2 build next week and this is very important for our 9 sec on drag radial with moderate low boost 24-5#'s low boost goals 
