engine swaps

[2 BRUTAL]

Hi Guys/ girls
Am looking for some info about RB 30 motors or similar to fit into a SWB MQ Patrol race 4WD. I need to keep the engine size under 3.3L for race classings.
Can an RB 30 motor be mated up to a VN auto box easily or is it a big job, or are they the same gearbox, reason being is that the turbo 700 is easy to mate up to certain transfer cases to allow the fitting of rock hopper reduction gearing. :b:
Some early GQ Patrols had carby versions of these motors, but I need EFI if I am going to do a swap to avoid carby issues on steep hills.
Is there a better engine option that is readily available that would suit my application better.

[Stewart1000]

you would probabley want something with a bit more torque, the MS1 Jatco 4 speed auto came standard with the RB30ET on the VL Turbos and they are reliable and could do the job better and easier to install than a vn box