These pictures are of the 2000-2003 SB2 heads produced for DEI and a couple of other teams during that period. The pictures you see here are of the the same cylinder heads  that where on JR's car when he won his first race at Texas Motor Speed Way. I should have some pictures of the newest SB2 heads up in the coming months. The only difference between the two heads is that the new ones have smaller chambers in the 35cc-38cc range, larger intake and exhaust ports and flow about 25cfm more.