"L/LU" suffix (mid 80's to early/mid 90's era) toyotas won't either. but the non USDM ship has sailed, apparently.

Corey, we've talked offline, but I think there's a lot of small change you can pull together on that B18B, and if you decide to go balls out on it that small stuff would add up to a pretty good gain. likely not as much as a good header over a crap one, but gains. and there's the real consideration that most "known gains" are from all out drag / drift type unrestricted builds or some kid with a new cam, a blowmolded case of sockets and a camera who swears up and down that he's only seeing 3hp, yo. either way, the formulae we deal with in IT and ST are restrictive in ways that traditional engine builder logic is still seemingly oblivious to. doesn't make the knowledge wrong, but it doesn't make it right, either.

your car runs well, and there's a lot left in the package - from the loose nut to the tires. develop that and build in iterations.