The exhaust is a real "hack." It l;ooks like the original mufler, a couple of two pieces of pipe, and some flex tube. Oh hey, I almost forgot the piece of a Coke can and a mufler claim added in for good measure!
After having both tractors for a while and picking up a second 990, I would say the 990 is built stronger then the Ford.
I have been using the Ford to plow my driveway and several neighors this winter, and the 990 at out other house in the mountains, the 990 is hands down a heavier duty tractor.
Right now, I the Ford has a broken hydro lift that I am working to fix, come spring time it will be retired to only cutting grass. The second 990 needs a little work, and will get a snow plow by next winter.
I appreciate the offer, but Va is a little far to travel for a snow blade. I I can't find one closer, then I will probably look for one from another make tractor and modifiy it. The OPne I have on my first 990 is from a Bolens, I just modified it and it works great.
Since you live in Nebraska,you know way more about plowing snow then I do, any suggestions would be great.