well yeah i know that, the b16 head is better than the gsr head, but why not just do gsr block on the b16 head. the ls block wont last long with the high end power of a b16. the vtec blocks have oil squirters for the top end, the LS block needs that if it plans to last long, and i know you have to take it to a cmachine shop to get that done, which isnt cheap either.