help on heads
but to really anwer your question we kindda need to know what kind of cam you plan on.
something small like the 224 or something big like the magic sticks?
there are heads out there for $1000-1400 that will boost you 30-50hp if you have a decent cam.
but just swapping to ls6 heads will probably only get you 10-15hp...they really are not that much of an improvement...particularly for the cost and hassle of a head swap.

