i have an LS/Vtec. my build has Endyn "roller wave" pistons that in my particular set-up yeild right around 12.5:1 compression. i have a B16 head with all ITR internals wich is also shaved .040 ARP rod bolts, with a golden eagle LS/V conversion kit. B16 intake mani. LS stock injectors, and a street tune from John Solero.....

my set-up runs very well on 93 pump gas, and pulls pretty good even all motor with an LS tranny. but i am in the process of changing some things around... oh btw my set-up has roughly 60,000 miles on it! woot woot