Head and manifolds will bolt on as they are they same bolt pattern as r33, everything else lines up to r33 block, dont forget to use oil restrictors. VVT is on the inlet cam only, but it is variable, so to control it properly, you need to use a 3d map with a PWModulated output, which your computer doesn't have. Also your CAS will not bolt to the exhaust cam. If your going for something extreme, im assuming you would put cams in. R32 gtr cams fir and allowyour cas to bolt in, but you will lose the vct, just fit some camwheels, as it will be heaps cheaper then trying to setup the vct on the dyno with a shipload of load pionts that need to be setup. Also dont forget you will need completely different pistons as the neo has much smaller combustion chambers which will increse to compresion rtio by approx 1