how much$$ for a bore / port

How much $$ does a 2mm bore (416) and some intake/exhaust job cost? (ball park figure). Does a 3angle valve job make a noticeable difference in power.

[wyndzer]

A good port job will cost about $250.00 to $350.00, I paid $325.00 for mine. I paid $50.00 to have my cylinder bored from stock to 87mm.