best disc brakes for sbp

The factory SBP 4" rotor is available from a bunch of sources and is being manufactured by Centric.

Do a search through this forum for factory SBP rotors - you will find the sources, and a lot of availability.

Also, do NOT expect your local auto parts vendor to find the factory rotor, unless you are dealing with a parts man that knows his stuff, and has dealt with Mopars for a long time.

Well, which is it? They are widely available (O'Reilly, NAPA, Schuck's, Rockauto.com, Year One do NOT list them - only Autozone that I found) or your parts guy can't find them.... can't be both here.

If you do go the autozone route, they run $85 each. And the calipers run a cool $150 each. We were told by a Mopar-only vendor a few years ago when developing this setup that Dart, Duster and especially Valiant owners are a frugal lot (he used much less polite term). We keep that in mind here. Also, I highly doubt they will clear the stock 14" drum rims.