If you are running drum/drum setup, the quickest and easiest bang for the buck is to upgrade to the widest tires that will fit your rims and wheel openings. The bigger contact patch is huge. OEM drums with skinny tires would lock up and skid big time when you stood on them. With a good brake rebuild w/ 4 wheel drums and fat tires, you can stand on the brakes and the tires will not slide. For drag strip use, the setup is plenty safe. If you are doing rallye racing (or an aggressive driver on the street), that is quite another story Need disc's up front then.