Well I've heard people say the 2g head can be very decent if you port the hell out of it. Well I was bored the other night and started working on the one I have. Basically all I started doing is gasket matching the ports, then I will go back through and smooth them out and sand them down with 80 grit.
I ended up taking out 3/8" of metal out of the ports. Just started on the first cylinder then decided to take pictures and show the difference. Here they are:
Threaded Mode