I run the single pot cosworth caliper on the rear of my car and have found it to be just fine. I use Alcon 4 pots up front. I do not have a balance bar and only when running on track for longer periods do I find the car out performs the brakes. For road use and occaisional track use the set I use on the rears should be fine, unless ego/vanity dictates otherwise! On the front end I would recommend something better.
