Personally, I would use an adjustable proportioning valve. Eric can hook you up on those. We carry TSM kits, and they sell p-valves. Give Eric a call, he's pretty good at getting things shipped quick. I will also say that with the Vette MC's lately haven't been doing the trick, or should I say that I haven't been able to get a good one ~ even buying them 'new'. So recently I've started using standard Scout II MCs Either way, with rear discs you should use an adjustable p-valve so you can dial in your rear brake bias.