Turbo Upgrade Question

[Gutling]

Okay I had a decent build on my sr, but looking for more power. I am planning on finishing my block first.
Here is what the completed engine will have (including supp mods, not listing every little thing)
block - fresh rebuild, cp pistons, eagle rods, arp rod bolts, arp headstud kit, apexi headgasket
brand new head - hks step 1 264 intake/exhaust cams, hks cam gears, peak performance gold vavle springs, crower retainers, greddy rocker arm stoppers
greddy intake manifold, hks fuel rail, ???cc injectors (also looking for help for, if i use blitz everything above 550cc is low imp, will the power fc handle this or will i still need dsm resistor), walboro 255lph
apexi power fc, top mount mani, 3" exhaust, fmic, tial 38mm, hks ssqv, koyo rad, splitfire coilpacks, greddy pullys.

I am looking for 500+whp. NOT daily, daily maybe 400-450. But i want it to be there when i need it, I drag a lot, have never drifted or autox, not relaly planning to. just street/hwy/qtr mile. going to run d-jetro on the power fc, so no mafs. What turbo should i be looking for, my original plan was gt35r. plenty of umph to get 400 daily, and got 500 when i need it. any other suggestions/comments/ideas to help me? Also what are some good sites to look at for a turbo, most of them I have seen dont really show hp numbers. looking for help from ppl running similar setups, someones that done it and knows what to do/not to do.