I recently aquired an apparently rare Nissan pickup - a 1988 extra cab with a V6 and automatic transmission. It was apparently bought new by a woman in Minnesota and was loaded with all the extras. It still runs great at approx 121000 miles. The problem is that someone in Minnesota removed the A.I.R. components from the left front fender which probably prevents me from getting through emissions testing. I haven't tried, yet as I don't want them to have a record of the car condition. As I understand the AIR system injects air into the exhaust to help the cat converter perform properly during engine warmup, but isn't needed once an engine is warm. Es verdad? Can anyone help me to understand this issue and obtain parts? I am concerned that even if I find parts there is another reason the originals were removed and new parts won't solve the reason parts were removed. E. testing is now mostly a "racket" since over 90 % of all cars initially pass the inspection, but once a "law": is passed it is virtually never rescinded (even though we no longer drive horse buggies (Tongue In Cheek)), so we continue to play the game..