Thanks for the info. I tried posting in classic view, but it would work for me. When I press submit, my post would disappear and nothing got posted. I attempted my very first post that way, to no avail.

The studs on the 3910 are 3/4, like my 4000. After a lot of calls and shopping around, I have decided to get the 3910 setup. I really like the idea of the tractor being a former sweeper unit as opposed to an ag tractor. The pedals, rock shafts, pto lever, gear shifts, all tell me that this unit had a relatively easy life. Not to mention this is a 10 series, so the hyd pump would be an upgrade. What I'm not thrilled about is the fact that the fill plug for the rear end is missing. The salvage guy says it wasn't off for long. A quick look inside tells me that he is probably telling the truth. It seems that every option that I've found has something missing off of it that would allow water to enter. I plan to take off the lift cover and trans cover at minimum. I'll have to start a new thread, once I get it home.