Well, here's a little update. I HAVE BRAKES. Probably have had them all along.
I pulled the master cyl off the parts jeep, and realized it hadn't gone dry. Bench bled it, and swapped mine out with it. Bled the lines again. Same deal. Great pedal when the jeep was off, went to the floor with it running. Pulled the vaccuum line off the booster, pedal was right where it was with the jeep off.
Still stumped, but finally got the balls to try moving it out of the garage (my driveway is a 15% grade straight down to a main road on a blind corner). Inched my way foreward, hit the brakes, and the jeep would stop! Kept building up courage and going a little faster, little further, each time, no matter what the jeep stopped. So I went down to the bottom of the driveway, floored it and got it up to about 15 MPH by the top, hit the brakes, it stopped!
So I have brakes, may have had them all along and just wasn't brave enough to find out.
However, the pedal is still going to the floor! What now?
The "Mall Crawler" - 1998 ZJ Grand Cherokee 5.2 V8, 5.5" LongArms, 32s, 12000lb winch & more.