hi this might help some of u's, the nissan infinity throttle body fits straight up to the GReddy plennum. these throttle bodies are 80mm id and can be baught second hand for $450-$550 from jap wreckers. a new one from nissan will cost about $1500. i've got a GReddy plennum and who ever tells you a stock one is better is playing with it. The only problem with the plennum is that it makes it hard to get to the oil filter from the top of your car. i have a oil cooler and remote filter which makes life allot easier. servicing your car on a hoist is no problem though. you's wont regret buying a plennum, good luck men.
