cost to rebuild cyl head stock

Why rebuild it stock ?? Why not put a little extra breathing capabilities behind it while you're at it !!:D
because its for who my wife calls hag bag, a true vehicle jinx.it drives 600 miles every week .better off leave it alone and just make it fresh again.then i dont have to screw around with it and can work on my junk.....it's not mine if it was it would get a turbo.and i'm not ready to yank my w2 360 for a 6 even if it could go faster.....