I've always used 73 -76 A body disc brake set-ups. If you're switching
the brakes on an A body, you need the upper A arm from the donor car,
if it's a B body, you don't.  New rotors and rebuilt calipers are
cheap too. Make sure you get the proportioning valve off of the donor
car or use a manual valve. I always buy a new master cylinder that fit
the donor car ( made for disc brakes ). Easy switch and all Mopar.
        Gary
On 4/9/07, Bill Provins <wiilbill66@xxxxxxx> wrote:
>
>
> I have heard that you could change the old drums to early '70's disc  brakes.
> Do you just pull off the spindles and calipers? Do they just bolt on to  the
> A-arms or what all do you need?
> Wylde Bill
>
>