I have a gsr motor that i spun a bearing in. The block is now fixed, I did a 20 over bore, shop pinned and oversized the rods, usdm type r pistons. Im trying to figure out what I should do to the head to make a lot of power without affecting driveablity.

 

m22x cams, rocket valvetrain, new header

 

Maybe you should throw an ITR valvetrain in there.Wouldnt be too expensive and would do nicely with your slightly built block.

 

camshaft+valvetrain

 

Port and polish, 3 angle valve job, cams, springs.