Winston1, Thanks, That drop box shift arm looks like what the seller was describing. I bet you are right about not needing to remove the bucket. I'm getting info through the wife as the husband is already in Colorado. I bet she meant to say you have to drop the front drive shaft instead of drop the bucket. If that's the case, what am I getting in to? My brother is an auto mechanic and we work on our own vehicles so as long as we can get parts from Hoye I think we should be okay... but I admit I've never worked on a tractor before.
California, The closest dealer to me is Kaweah Lift Inc in Visalia. You're right, they sell newer Yanmar tractors. I can't afford a new tractor and want one we can fix ourselves. I did become aware of the grey market tractors when researching and will avoid them. If I determine that this is worth a shot, I'll use it in 2WD until I can get to the repairs. I will also take a look at what is available used in the area before I decide.
Clemsonfor, The line I was referring to about narrowing it down was "It was the part that the 4WD lever connects to just inside the box". I think Winston1 suggested the right part (drop box shift arm) as long as that's the only thing wrong in there. Yes, The unknown is worrysome.
Kenmack, good idea about seeing if the part is available.
Thanks for all the input!
Shela