70 Duster--conv. to 73-76 front disc??

Yes, it would be large bolt pattern.

If you want small bolt pattern then it is either the stock 4 piston stuff or the Scarebird conversion stuff.

http://www.scarebird.com/

Chuck

That brings me right back to square one..the guy from where I purchased the pitman arm told me about Wilwood brakes and the conversion kit. He must not have heard the 4 minutes I spent on what I would like to do to avoid the $$ investment in converting to the BB pattern.
Thats nice, for all intents and purposes, the car "really" has no brakes! This F'n sucks.