folicor

first things first, I have searched and read, and searched and read...........

OK, I'll try to make the rundown as short and sweet as possible. First off, I'm sorry for posting in the tech section, but I frequently post in Honda forums (yeah, I'm a Honda boost Boi) and the only people worth talking to always seem to surfing the tech section. My bro has been hounding me to build up his 93 FD Touring for months now because he/we have failed in the past. His car only has 30k original miles on it and it is ******* gorgeous. I have pretty decent knowledge of how the whole system works, however I do not know the limitations of the car and what parts work well with it.

His mods are as follows: upgraded vac hoses(the car never boosted right), efini twin turbos, greddy standard mount IC w/piping, Efini Y-pipe, good downpipe, fluidyne radiator, good AST, Greddy elbow, blitz BOV.

Plan so far: Upgrade fuel pump, injectors, get a PFC with commander, full catback exhaust, convert the twins to a non-sequential setup (port the wastegate), get a profec B boost controller or possibly the AVC-R, and upgrade the clutch and flywheel, hit the dyno. We pretty much ruled out going to single turbo cuz he already wasted his money on the efini twins (bad move IMO).

Goal: Looking to make about 400WHP at 17psi on the stock motor and maybe do a second mild setting for about 300WHP on 12psi

Is this all within reason for a stock motor (can he boost higher safely)??? Please let me know if you guys have any good/better suggestions as to what to do with the build. He has a decent amount of $$ to work with but he has most of the main **** besides fuel delivery outta the way. I have to whip him up a game plan before he goes to a shop and dumps 8K more than what's already in it just for a 400 WHP car that's semi-reliable (or as reliable as a 400 WHP car can be ).
He won't be auto-xing the car often cuz he's a bitch and can't handle my honduh in SM However, he still wants a fast car that's fast about 50X sweeter than mine. That shouldn't be tough to accomplish from here. Thanks in advance for any responses. I know there's some of you out here that have to be amazing at working with these motors.

As of right now, the car is not boosting correctly with the sequential setup. Intermittent boost failure basically and it's spiking like a **** and he's getting fuel cut. I believe it has something to do with the prespool as to the boost failure and the spike due to too many mods for a stock ECU to handle. So it looks like non-sequential is coming soon. Oh yeah, he also had a profec B spec 2 but I told him to sell it because it's a programming nightmare.