[455-4+1]

Thanks for the info

I will be going with 17"Snowflakes so clearance shouldnt be a problem

Diff #1 is pretty much the stock 3.32 posi factory diff, so looking for a reasonably simple disc bolt on if possible

Diff # 2 after engine upgrade will still retain a factory 10 bolt housing for looks, but with Powertrax centre, 30 spline axles and I will have the axle tubes modified for Ford ends with Axle retention and then use a Ford brake setup, lots of options there hopefully

Looks lime the C6 used a 305mm (12") rear rotor with a single 45mm piston, so might look for something similar
Although weight distribution will be a little different, hopefully adjustable proportioning valve will help dial it in