Ok this is what i got....i now have northcobra brackets..and 93 cobra 4 lug discs in back...so i still have the stock width...im going 5 lug and have some ranger axles...what i need to know is do they make a 5 lug roter that is 10.125 or can i put a bigger roter on.. and if so do i need different calipers . and if i do... will they work with my north cobra brakets?....i know i can probly just have a machine shop drill out the roters i have now to 5 lug but they might look way to small with the new 18 in fr 500s im getting....