Stroked would certainly help with low down torque the stroked or RB26/30 combo's push big numbers because they are matted to huge turbos and make that power at 6000+rpm. Also, we are talking bulk money.

Granted there are not a lot of RB26's shoved into patrols and it would be rare. But it's also a downside cause unlike most popular V8's from 5l to Ls1 and 2's they have been done enough that the R&D, kits and experience is already out there. I certainly wouldn't want a workshop 'giving it a go' if they hadn't done it successfully before.

If you are are going to stoke the RB26, you should just get a 4.8l put forged internals in it and wack on a turbo, it will make more power in the usuable rev range and will be MUCH cheaper. Otherwise for the money you will spend you can get a LS2 create motor, stoke it to 6.7 then put a charger or turbo on it and destroy all - this is the kind of money you are looking at with make big reliable pwoer from the RB26. They are highly strung engines. A patrol with an RB26 does not a GTR make.