I have been wondering for some time now about a proper GTT to GTR convert. So far, all I've seen on the market are bodykit converts, which makes no difference to me other than dressing up your car. what does it take to convert the 2WD to a 4WD? Is it a bolt on thing or does it take cutting and welding which could cost its road legal status? And if it is possible, can I keep the stock RB25DET or do I have to do an RB26DETT convert too? Owh and yes, this applies to the R32, R33 and R34. Would really love to know. Thank you