I just had my heads off a few weeks ago because of a blown HG,
and while I had them at the speed/machine shop getting milled
and a three angle valve job, I inquired about some port work.
I told them that I didn't have a lot of extra money for a full port
and polish job, so they recommended that I just have the bowls/
pockets done. They said this was the biggest bang for the buck
improvement that I could do, and that this area always nets the
biggest gains. So I had them clean out the bowls/pockets and
then I port matched the intake to the heads myself. HTH
James