After you get the right disc brakes on your car, this is what I was talking about.
The top one is for a 71 challenger with power disc brakes.
The bottem one is the power 4 wheel drum brake distribution block. They don't funtion the same way.
I did the this swap on my 71 and used rear 11" drum brakes that were on the car and it works great. Better than my 74 with factory power disc brakes with 10" drums in back. I run a adj proportioning valve in my rear brakes line too, but that is a different deal for brake tuning, not setup.
I'm thinking 1970 is the same? Someone here will know.

71 power disc brake proportiioning valve, and the steel brakes lines are different also.I ordered all new lines from Fine Lines for a power disc brake car and everything bolted up and fit fine.Used factory correct rubber hoses, nothing custom. I used 73 E body spindles and brakes.

Last edited by Challenger 1; 09/29/11 08:10 AM.