So after driving my moms 2000 park avenue a coule of times (4 wheel disc) i eithrer have some SERIOUS issues with my system or hers are just that much better... SOOOO smooth and pluch and responsive... How much would we be lookin for a rear disc conversion? Or how would i be able to get my system to work better without the valve (the cheaper alternative i assume)? i can see slotted rotors and ceramics in the future for the front from DP but what about the back?