Help needed with brakes

[Strat Fan]

If you have a Litton does it not have the Tilton pedal box fitted?

For an unservoed braking system I really feel that you need fixed body calipers with multiple small pistons to maximise pedal feel and efficiency.

If you are sticking with the floating single piston calipers then I really think you will need to have a brake servo fitted to make the brakes work as you want.
See HERE for a unit which would satisfy both the front and rear circuits. Whist it isn't cheap it would still be much cheaper than new 4 pot calipers and wouldn't cause you any issues with wheel clearances.

For reference here are a few pictures of Corse "S" cars with 4 pot brakes fitted-

And another with Wilwood calipers-