In Reply to: Manifold for my NAA posted by Chuck Palmer on May 22, 2018 at 10:47:09:
Yes, the manifold for the NAA model is the same used for the Hundred Series and Thousand Series, from 53-64, and is part number EAE-9425-C. Listed in the Dennis Carpenter catalog at $174.50. First, it's your tractor and you can do anything you darn well please with it, but, replacing the exhaust manifold isn't a difficult task, just time consuming. A few parts need to be removed first, carb for one, exhaust pipe for another, and possibly the coolant system drained as well. That being said, my advice is to invest in a new manifold and be done with it for another 7-10 years. Just some friendly advice.