There's nothing wrong with a well set up RB25DE+T (assuming it's a 33).
R33/4 turbo
dump pipe
custom tapped oil/water lines
33/4 det cooler and pipe work
det ex- manifold
det injectors
det ecu?
walbro intank pump
clutch
det front brakes
springs and shocks
Nice responsive 180+rwkw. At that power level, the N/A box and diffs etc.. should hold up
By the time you upgrade to all the det/turbo gear (motor, box, loom, clutch, susp, brakes, diffs, dash, ecu, exhaust, body parts...)you might as well sell the car and buy a 32/3GTR??
Unless it's a 4 door...