T3 flange, and a world of options between a grand and two in cost
then factor in tuning
some sort of ecu whether that be piggyback or standalone. Good luck with that !!!
you can get 180kw with the neo engine/turbo/smic. grab a z32 afm, a nismo fpr, a bosch 040 fuel pump, a safc neo and a sitc (or emanage in lieu of these 2 piggybacks), full 3" exhaust, auto trans cooler and shift kit, sk's bilstein shocks and whiteline swaybars and bushes, braided brake lines, and you'll have a good stagea thats an allround wagon. go, stop, and cornering. hiflow the neo turbo (make use of the bigger exhaust housing that you have in the S2 over the S1) and there is 200+
about 5k tho all up ^