Power assist brakes

Your current pedal is fine. Simplest is the $170 new one w/ MC on ebay. It is based on a GM booster. If cheap, follow me and get the brackets/lever from a junkyard Dart. I didn't use the fugly booster on it, instead mounted a booster/MC from a junkyard 99 Breeze ABS (see avatar). I later cleaned and painted the fugly booster and used on my 65 Newport (had to drill new holes) until I found the correct booster for my Newport (almost identical Midland-Ross, different bolt pattern). I then sold that booster to a guy here. Good luck.