might not be helpful but a
hks gt2835 pro s, rate at 420. would be able to make 400rwhp maybe alittle more and the lag of them isnt that bad, i find it comes on boost quickly and hard with min. wheel spin
of course you would need
550cc injectors or bigger (i would go 740cc they are only $50 more)
z32 afm
aftermarket ecu
bigger fuel pump
plus some suspension mods to help
get the power down (i highly recommened you buy an aftermarket lsd the stock one is shocking)
if the 2835 is too small, i would go for the gt3037 pro s