I have to question the 7/8 bore. Most manual brake systems use a 1 inch bore, and most power systems use a larger bore... 1 1/16 or 1 1/8. I am concearned you might have too much pedal travel.
I know how tight money can be, but brakes are the most important system on any vehicle. The after market MC kits are a much safer option than a system cobbled together from finds at several car shows.
