need more info! what parts did you use? are these 1970s factory disc brakes? what master cylinder did you use?

yes, you can get manual disc brakes and have them work well.

check this forum for a LOT of brake information from sizing your master, to figuring out your line pressures:

https://board.moparts.org/ubbthreads/postlist.php?Cat=0&Board=Corners


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