Drum vs Disc, Power vs non Power

You'd be better off putting your $230 into a Scarebird conversion than spending it on drums and then spending it again when you upgrade later.

As far as "Mopar" parts, pretty much all the rotors and brake parts are made in China anyway, so does it really matter if they're for a Mopar or a Toyota?

Drums, if they're perfectly adjusted, dry, and cold can provide as much or more braking power than disks. Problem is, they're almost never adjusted perfectly, on a daily they get wet, and after a few applications they're not cold anymore. And as '67 Dart pointed out, any drums you can get now are made overseas, and the selection is dropping rapidly. It's already not easy to find some of the variations of the drums that came on these cars.

I've converted all of my cars to the 11.75" Mopar disks. They work great, even with the 275/40/17's I run on my Challenger. That thing will stop in a hurry, it plants the nose despite the 1.12" torsion bars and Hotchkiss UCA's I have with the anti-dive taken out. I wouldn't drive anything on even a semi-regular basis with 4 wheel drums, too many idiots out there.

Power brakes aren't necessary, especially for the lighter A-bodies. I have them on my Challenger, but have manual on everything else and I actually prefer the manuals. Much better feel. Takes more leg, but I think it gives better precision.