Unfortunately, our Pantera is not a good example for comparisons. It uses Wilwood Superlite 2 aluminum 4-piston fronts and ATE aluminum 2-piston rears ('70 Porsche 911 S fronts, adapted to the Pantera's rear uprights). All pads are Porterfield. All four rotors are adapted 11.5" OD Porsche 911 (pre-1980). Those rotors are the same OD & thickness as Pantera but ventillated. Our power booster is one of Don Byers' fine adapted GM assemblies with dual vacuum diaphragms & dual OD master cylinder bores. Our e-brakes are Wilwood mechanical aluminum go-kart brakes adapted to stock Pantera cables & uprights. Pantera East later made some similar e-brakes using adapted Wiwoods..
All the hoses are genuine Aeroquip dash-3 braided stainless reinforced teflon. I run full boosted power to the front brakes with a manually adjusted propor-tioning valve in the rear circuit (reverse of factory plumbing), discarding the shuttle valve & the stock prop valve. With 245-50x15" front tires & 295-50x15" rears on 8" & 10" Campys, either Judy (5'2" & 120 lbs) or I can instantly lock the brakes. So every single part of our brake system has been changed over our 42 yrs of ownership. OK- how does everything work, you ask? PDG, I'd say.
Little story: the OEM master cylinder blew a seal and.lost function of the OEM Girling front calipers in the Sierras, on the way to a 'Vegas Fun Rally. Judy was driving and chose not to mention this until we arrived at the overnight stop. Thanks to a second cup of coffee after breakfast, we had been 15 minutes behind the rest of the Nor-Cal group, who were not lagging about waiting for us. Using only the Porsche/ATE calipers in the rear, she caught the rest of the group in the twistys and sedately followed them to our stop outside of Yosemite. Only then did she mention 'a kind of long travel brake pedal....'.
A quick check at the motel showed the front calipers were completely inoperative. Didn't slow her down at all, and from the right seat I had noticed no problem with her driving. No parts around; it was my turn to drive the next day (we regularly traded off), so we finished up the Fun Rally still on only the rear brakes. Arriving home after our otherwise uneventful 550 mile tour, I mounted Wilwood front calipers and Byars' GM power ass'y to fix the front brakes.
The ATE calipers are still on the rear, although I had to make my own replacement ss pistons 20 or so years ago due to a leak. I guess now they're commercially available from Porsche shops. And other good replacement calipers are available, too. Just be sure you know exactly what you're doing! I've seen some frightening home brake adaptions, and I have no 'spare' friends!.