question is in the title. i was wondering what kind of gains could be had for just having that done to it. i am also wondering what it would cost to get a good port-job done to them? im new to knowing what it costs to service and modify things and dont know how to do it myself. any help is greatly appreciated!

i was actually wondering the same thing. i just had my head gaskets replaced last week, and the shop that worked on the heads said i wouldnt gain much porting my heads, with my car being stock, so i didnt do it. anybody got any hp numbers from it??