what front disc setup do you use?
I used Aerospace brakes on my 71 Demon race car. The car weighs 3150 I used their drag setup solid rotors. The only catch is that you have to use a 9 inch spindle (you would have to check with Aerospace for sure), I cut about 50% of weight from the 73 set, and switched the master cylinder from an '85 dodge Diplomat. I have had the brakes on for 7 years. they work good.