Success rate of RS49 and RS60 turbo, need a turbo choice asap.

[SRTNemesis]

This is for the folks that have the rs49& 60 turbos, i need a turbo choice to support 500ahwp and a fully built motor. I need to know asap, car is being put together next week and after breakin i want my new turbo.

Mods are as followed:

6bolt motor, 4 bolt rear / lsd
wiseco piston 9:1 compression
eagle rods
machined crank
bored .20 over
Stage 3 port and polished head
Nippon nitrate treated valves
Greddy emanage*ultimate hack*
ignition harness & injector harness
AFPR 1:1
DENSO 880cc injectors
FMIC with 2.5 inch piping
crushed 1g bov
ACT 2600 clutch
Cometic head gasket
o2 housing with wastegate dump
3' unrestricted turbo back with n1 muffler
walbro 255
walbro inline pump
stock 14b

I have other stuff here and there but she's ready to put out some power.

 

[Ben K]

If you're looking for 500hp, go ahead and rule out the 49.