I've have a chance to pickup a rebuilt pre-magnum 360

[bovman]

For $500
How much cam could I put in it without the valves hitting the pistons?
Any ideas how to get some horsepower out of this without hurting the reliability or increasing the maintence?

I'm a Chevy guy, like the Mopars but don't really know a dam thing about the possible engine combos.

Any suggestions appreciated.