Disc Brake Conversion Failing

RustyRatRod said
Is it power or manual? Which master cylinder? Most have better success with manual using the 15/16 bore master cylinder. It produces more pressure than the 1" bore and usually has a greater assist with manual brakes.

Not sure what bore? it is manual and was told it's for disc/drum application. it's from FVP off of RockAuto.