If you want to go with a simple setup you can put your fogger nozzles in the throttlebody pipes, 30HP per side. Problem you will run into with larger shots is the unequal distribution of fuel from the nozzle into each of the cylinders due to the configuration of the intake manifold. This will result in the frontal cylinders running leaner than the rear cylinders. If you want to run larger nitro injection safely you really need to go to a direct port setup with a nozzle in each of the runners. This will ensure that your mixture ratios are consistent in each of the cylinders. Be sure to jet it fat - putting the A/F mixture down into the high 10's, low 11's. Pull timing advance a good bit as well. You'll want to be running around the 16-18 degree advancement at full load when using a high octane (100+) fuel. Do not attempt to run N2O with pumpfuel. The high-compression (10.5:1) NA VG30DE is not tolerant to a lot of loading either by way of timing advance or octane so be conservative with your tune.
Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor. Albert Einstein
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