The 284 528 MP is a proven performer with manifolds. I would look at the specs on it and use it help me pick a cam. Of coarse the flow sheets will have a direct bearing on the lift you would want to use.

Then if you want to throw some modern technology in to the mix you could look at the late model Z06 Corvette cam shaft. They make a lot of power through mufflers and cats.

Or you could contact Dwayne Porter as he has designed the cam and done the head work on some of the faster F.A.S.T. entrys and some folks that just like to go fast with manifolds like BSB67.

Pretty sure Dwayne did the heads and cam for BSB67 Charger that has run 11.60's at 120 mph with a 3.23 gear and over 4000 lbs.