I have a 69 Charger 440 car with the Hemi brake booster...disc in front/drums in rear with an aftermarket front disc single piston caliper on it..I can't seem to get the brakes to work properly. To me it seems like there is not enough pedal to stop the car..Is the rod coming out of the booster adjustable?? can I repalce it with a longer one?? or is this just not a good combo to use?? also, I have the hemi-booster master cyclinder on it...the single piston caliper is the 72-75 A-body type....If Anyone can help I would greatly appreciate it!!!!!!