Posted on the N forum as that was what I was looking at but was told the hundred series were better being able to get for about the same price as the NAA's I was looking at. Found a few and finally picked up a 55' 640. The PO had some work done it needed a clutch so he had that replaced and the mech. said trans needed work so he rebuilt that while it was split. Installed all new gauges, new starter, front tires, battery a few months ago has 12v conv. and he gave me new petcock, lift arms, adjustment arm and stay chain kit. Here's some picture's want to bring it back to original colors also starts right up no smoke but need some advise it leaks some oil around steering base see pic. I plan on moving snow with it at our cabin so I have a couple month's to do some work on it now. Thanks Mark