Hey, I have a 91 Patrol 4.2 petrol and am looking into bigger HP motor options. I would like to do a RB25 or RB26 conversion but I don't know if they would be any good off road.

Has anyone here driven or owned a high powered turbo petrol motor in a 4wd?

I have looked into the cost of changing it to a diesel turbo and RB conversions and the costs are quite the same, I like the sound the RB motors make but Diesels are better under water. My petrol is good in the water but it's carby and i don't know how a EFI motor will go.