which heads on a 318

Much appreciated, looks like concensus is I should keep my eye out for a set of 302's & valve porting might not be a bad idea for what I have in mind. Now, just to find a set.

GT, what about the mopar perfomance purple cam,

http://www.summitracing.com/parts/DCC-4452782/

would that be a better choice still?

Thx.