I spend allot of time researching things that was just the case that led me to install Chevy SS Cobalt Brembo calipers, go with a 19% pulley ratio and also to install Meth/Water injection (to address the increase manifold intake temperature from the 19% ratio) that I assembled with parts from a wide variety of vendors. Of late I have been looking at heads. I used to race snowmobiles back in the early 70's so I am well aware how porting and polishing helps performance. I don't autocross nor do I track my car so I am not thinking large valves, 1.8/2.3, but rather something not as large but larger than the OEM such as .5/1.5. With this in mind I have been talking with Mike at Thumper, http://www.thumperheads.com/ . His TPR-2 head along with a ported intake looks very interesting and would appear to mate up well with my RMW 450 Injectors, Dominator Cam and my OBX header. He can even make the exhaust ports match the OBX header ports.