No rear brakes after 4 wheel disc swap?

Update:

Alright so here's where I stand now.

I put a brand new master cylinder on the car from dr. Diff. The disc/disc 15/16 bore master cylinder and the car and the rear calipers are now engaging.

The pedal now pumps up and Im getting a streamline of pressure when the rear caliper bleeder are cracked but as soon as you quit pumping and hit the brake again 2 seconds it sinks to the floor. Even after calipers are bled.. I capped where the brake line splices into the hose and the pedal feels firm like it should. This told me that its either one of the hoses leaking or the caliper.

So I pulled the banjo bolt off the drivers side caliper and replaced it with a regular bolt and nut just to try and put hose back into the equation but leave out the caliper. And even with the bolt and nut replacing where the banjo bolt threads into the caliper leaking of course, I still have a firm pedal. This tells me it HAS to be something with the caliper.

. So is there a way to adjust these calipers? I deleted the whole ebrake setup as well. Does anyone know for sure if somehow the ebrake assembly needs to be on inorder for the caliper to work properly?