Eg: Non NEO head with VCT, no porting, Tomei springs, poncams, 514rwkw (currently 563rwkw) 8000rpm redline.
Eg: Non NEO head with VCT, ported exhaust ports, Tomei springs, HKS step 1 cams 546rwkw 8500rpm redline.
Both heads have standard size valves.