my opinion is to go with the b20/vtec bro....I've had both ls/vtec and b20/vtec both stock and the b20/vtec moved way better than my ls/vtec....i did have the jdm b20b(99-00) witch in those years it was the high compression....people say the sleeves are weaker on the b20 but we have a b20 bored to 85mm and it measured thicker than a standard b18. i would deffinatly go b20/vtec...GL