Hy Lemmm117, I would not recommend manual disc brakes, your pedal effort would be excessive. There are kits available to mount the master cylinder/booster under the floor and use your stock pedals. You will need to order a master cylinder for a disc/disc application (no residual pressure valves), and yes a proportioning valve is required. If you search for CPP and other suppliers of brake conversion kits you'll find a lot to choose from, hope that helps.
