I have a friend who has wants to upgrade his MC to a dual type. The car has 4 wheel power drum brakes. Is there an easy (preferably Chrysler) drop in dual replacement? If so, is there a proportioning valve that will match? He intends to keep the drum brake setup. Thanks John Del Wolcott, CT "I'm just trying to get into heaven, I'm not running for Jesus!" Homer Simpson (remove S for email reply)