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If it's going into the GQ (assuming it's an rd28) an rb swap is quite easy in terms of bolting up. As the guys have said, early GQ's came out with carbied rb30's so the legalities of getting an rb engineered souldn't be too hard.

As for power... I own a nissan stagea, it has an rb25det neo and weighs 1900kg with 2 passengers and a bit of fluff. So when we go camping or I'm hauling around a heap of stuff, the 'ol wagon is well over 2T. It has a standard turbo, but has been re-tuned (using a nistune board in the stock ecu) with a bigger inter cooler and exhaust. For what it is, it hauls ass! With the turbo torque and awd I regularly scare the pants off hsv's and annoying bmw's. If I really get stuck, I also have 75hp of nitrous to switch on... but anyway.

I would find yourself a nice series 2 auto, stagea rb25det NEO front cut or engine package. Get a wiring diagram to help sort out what ecu wiring you keep and what body wiring from the stock ecu you can ditch. Get someone to install a nistune board into the ecu and run a manual r34 gtt map (if you're running a manual box behind it). Keep all the stock sensors, afm etc. Install a larger than factory intercooler, run a 3" exhaust at a minimum.

Most importantly, get the whole lot running with the stock turbo, afm and injectors... it's alot easier to fault find problems when everything is stock. Once you have it all up and running properly get it on a dyno and have the nistune board tuned to suit. You'll end up with about 130-140rwkw on 12 psi (don't try running anymore boost, you'll kill the turbo).

After that, 350hp.... Hypergear highflow/400-600cc injectors/Z32 AFM and a re-tune.

Install a surge tank with a bosch 044 and a whatever intank pump as a lift pump. The odd angles you get into in a 4WD you will need it.

Also, if you do crazy climbing or traversing, look at extending the sump or fitting an accusump.

Cheers

Justin

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