not so much on a vtec head on a non vtec head u gain a lot, cause vtec head flows pretty well, and he still has his stock gsr mainfold, so with all that headwork he is not utilizing it becasue he is not increasing the amount of flow being able to get into the motor

Don't get me wrong he has a good starting platfrom, but u can only expect so much, i mean there are guys with 12 to 1 pistons, knife edge crank, cams, port polish, intakemainfold and they are only droppen like 210 whp...

once u get more stuff added and get some tunning and fueling u will start to achieve high hp numbers, but as u stated u not thinkin about turboing till u get to 250, but once u get there( highly doubtful) all the shit u have n/a will not work with a turbo set up FYI