Is the PFC for an gts25t, as I know they've stopped making them for that model, weather they started production again is another thing... Nengun don't include the freight costs etc. to get you in, so it'd be more like $1100 if they actually have one.
Your best bet would be a slide standard hi-flow ($1000? maybe), Apexi safc ($300) and a genuine walbro pump($250) + tune ($200). I say this because if you get anything bigger than a standard hi-flow you'll be looking at more like 4k as you'll need injectors, afm, clutch, pfc+full tune and other little unexpected expenses. With the combination I mentioned you'll be able to get most out of your car with the money you have right now. Plus it'll be responsive and capable of producing 220rwkW+.