Haven't been able to make it to my building today to look for MC, hopefully tomorrow evening.
I had lunch today w/a friend who bought in fall 1969, a '70 cuda. 383/4spd, etc., and it had, power drum brakes. He has pics of car but doubts he has any of engine compartment. It was just an orange engine w/a big air cleaner. He said it had a gold booster & was quite sure of that. As to the MC, his inclination was it was bare metal as it had surface rust on it when he traded it off but no way he could remember for sure one way or the other. So, no help there.
I pulled out a 12/69 motor trend w/a comparison between a; CJ torino, LS-6 & 440+6 RR. I posted one of the pics below. The picture is pretty good, my scan, not-so-good. Even though its B&W it definitely shows the MC & booster as black w/motor side exit & is a disc brake car. Anyway, that helps substantiate the black/black on disc brake cars.
This test car has an LA dealer plate on it, which is where the mag states they got the car, from a local dealer. I never noticed it before but, it's a great reference shot for what decals go on the air cleaner of a 6bbl., AG car. Also distributor, mark on firewall, wiring, etc. Also, it has the shielded air cleaner, as my LA built & sold car does, with the AG. AG cars should not have the shield but that proves at least 2 did. Mopar was not too consistent, it looks like to me.
I'll post my MC info as soon as I can.