I have a 929 that me and my brother converted to an rx-4.
These are the following stats:
s4T Engine (3mm apex seals, increased oil pressure, mild streetport, end and intermediate plates all doweled but not housings (I bought new housings with new apex seals and didn't dowel the housings. I am planing to do this when I re-rebuild for this mod)), Top mount standard, Hiflow s4/5 Turbs, microtech mtx-8 and bosch coils, standard injectors, s1 radiator (I think), s4/5 gearbox, five button steel fibre clutch, custom 3inch tailshaft, Hilux diff weld locked 4.11 and 30 year old leaf springs, Camira calipurs and Hiace discs front, Bosch Motorsports fuel pump (924 i think), surge tank (about 1.25L), VL turbo fuel pump as a prime pump (I know this is definately wrong pump, had a standard 929 carb pump as the prime but wasn't flowing enough), Malpassi rising rate fuel reg., the original turbosmart boost controller (this is a relic,series one, but i've been told these are really acurate).

Now, if I were to put a GT35r with a 1.06a/r on, would the following upgrades handle this turbo? My target is 500hp (rear wheel):
1x044 fuel pump
1xHolly blue/red (can't remember which) as prime pump.
front mount intercooler (about 600x600 or so mm)
bigger injectors (not sure what combo - 500prim 1000sec, 800 all round, 1000 all round, but SARD brand)
reverse rolled rx-4 leaf springs with control spring 50% thicker.

And, will a standard s4/5 g/box handle this much power?