Upgrade Time... SR Buildup?

[SR2Zero]

Okay so here it goes... I've just came into possesion of a redtop sr, bought from somebody I knew, pretty good condition. Its got t25 still on it, basic bolt ons, megan mani, megan elbow, ect, didn't come with downpipe.

Basically, I'm going to upgrade to a gt2871r .64 ar, thought about full race t/s but decided against it due to the lack of a/c (which may or may not be put on but w/e :-/ )

To complement the turbo I've pretty much decided on...
Gt2871r Extrude honed
Tomei manifold (swain coated)
Circuit sports Elbow & Downpipe
Tomei 256/256 Poncams, some sort of spring/retainer combo.. brand not decided
Greddy Intake Manifold (Upgrade from my knock off, boo fake shiz)
Greddy V-SPL (Maybe HKS one, still debating)
Pipingpro Gt2871r intake
Z32 Maf
Tial BOV
Enthalpy Rom Tune
(Maybe a DEI CO2 Intercooler kit, not sure)

I'm going to do basic gasket replacement, waterpump, nismo thermostat, ect. Now, my question is to build or not to build... I want stock bore for sure. I just want a extremely reliable set up for 350-400 whp. Also, about manifold cracking, tomei + CS downpipe elbow combo should be ok? I've debated this against the use of a dp like megan with the flex. Not sure what to do about it.

I know its a book, but be expecting a full project thread, including all this + seam welding (I guess stiching) the entire car, and such.

Thanks for the time.

[fliprayzin240sx]

So what do you have now? Dont forget you will need to upgrade the stock fuel pump and bigger injectors (740s). Then slap some Apex'i HG i there. Personally, i'd save as much money I could and go Power FC on all that shizz. You want reliability, a properly tuned Power FC will give you all that...

[SoguRacing]

sounds like we have the same idea in terms of power. So far i have a power fc L-jet, hks step 1 cams 10.5mm lift 256 dur., z32 maf, stock in/ex manifolds/dump pipe, and going to get a gt2871 .64. deatsch 740's.i dont think you need the tomei manifold and greddy intake. that's over kill for what you're going for unless you want the bling bling. that's about a 1000 dollar cut and you will still be able to get the power you want. that's my $.02

[SR2Zero]

I've definetely thought about Power FC, due to a first ROM tune being 500, and I can just get Power FC for what... a grand? I've got HKS 555c injectors at the moment, I guess I'll just sell those and opt for the 740s. I'm pretty set on the tomei, debating on the greddy intake or not. I don't have the stock exhaust manifold so I'm stuck with the megan that loves to crack.

I have the walbro pump already set up in the car, and yes I did plan on a HG upgrade.

I'm just trying to figure out the kinks of all this, I'm ordering the first wave of parts this week.

[SR2Zero]

But there shouldn't be an issue with the manifold and downpipe.... manifold cracking right?

And to build or not to build? As I said in first post, don't want to go bigger than stock bore. So let me know what you guys think. S15 pistons are stronger correct?

Thanks