Hey guys I need help here, I'm about to get a ported and polished head off a buddy of mine. Can anyone tell me what gains I will see, and offer any opinion and advice as to what I should do to this head....Also what I need to make this happen and what I should buy for it....

He also said it might have a 3 way valve job done, I have no idea what this is or what to look for to make sure...

Please guys help me out...

I'm about to make a move on my engine....

Wish Me Luck

Ronnie
97 GS