You know I was just reading on eof my off-road mags and in the new products section it had a company that made a proportioning valve that could be used with disc/drums, disc/disc, drum/drum they said you name this ONE valve will do the trick. Problem is I haven't been able to locate that mag since I saw that ad. MIght want to do a search on google for off-road proportioning valve, Jeep conversion proportioning valve or something like that. If I find it I'll post it up.