1966 Dodge Dart Convertible disc brake conversions

edwardo said

i think i want to go with a brake booster and 15 inch wheels. this car will be a street driven car .

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That just leaves the bolt circle...
As said previously, I'd just call up Doctor Diff- great guy, great parts, and he can walk you through all the ordering options.
Examples:
10.95" Front Disc Brake Kit (Stage 1)
Bendix Style Dual Diaphragm Booster for Mopars
Mopar 1 Piece Proportioning Valve