410 stroker camshaft
What are the perameters of your driving the car?
Rpm wise, what size tires?
The custom cam will (or at least SHOULD) perform better than a off the self cam will.
Not having been there and done that, I myself would look at a camnin the 240+*'s of duration @ .050 with as much lift as your heads allow.
Let us know who you go with and the specs.