Like previous posted, a 200 shot of NOS outta get you there.
If your talking about the later model open chamber heads w/ 1.94 intake valves you'd probably be better off beating a dead horse than wasting any time or money on them, the vortec heads with the smaller combustion chambers and the high velocity ports would suit you much better or you could just save up your money for some better heads all together.
You can score really good set of aluminum heads now for under $1000
Goodluck, Charles