Yeah, I think its been worked out that the VQ25 turbo set up would physically bolt on to a VQ35 straight up. But the turbo couldn't handle 3.5 litres of grunt
When looking for turbo kits, you have to account for 2 things mate- 1, has to be able to fit a RHD, and 2, has to be able to fit a AWD. So what your looking for is a G35x turbo kit, that can be mounted for RHD. Have a look through this turbo kit site. I don't know where you would go for engine management, if you went down that path.
Alternatively, there is plenty of supercharged kits out there too! lots of options