I hate having to go through all the gyrations of trying to get good braking with a big cam. So I decided on my truck, which has C4 brakes and suspension, to go with manual. But it is recommended not to try to use the little C4 calipers without power assist. So I put the system together to where it would stop to some degree and kept picking at it. In the end I used the manual master from a 1978 Malibu, which has a 7/8" bore, and added a brake pressure amplifier from ECI to the front. I had one on the back, too, but it was unnecessary and since I was increasing pedal travel with all these smaller parts I had to be judicious. The final part was Hawk brake pads. I use street pads for normal driving and for a while went to a much more aggressive pad for the track, to hold the truck. But now that I have the tune up right where it needs to be I can either launch from an idle, or with the 2 step set at 3 grand. I have a 3500 converter. Launching from idle, or just above, is the best way yo launch with a street/strip "flash" converter. But the brakes work great and that's all it took.
ECI in Moose's home state of CT has now come out with a terrific booster/master that delivers power stopping through a unique concept. Check out what Ralph has done at ECI. But the new system he came up with is pricey and in such demand you may have to wait a while.