Hello all, this is my first post here, appreciate any feedback. I recently purchased a ford row crop tractor, it is red and white, with 901 SOS decals on the hood. Despite that, I’ve noticed that the transmission appears to have gold demonstrator paint poking out from underneath the flaking red paint with “981” stamped into the casting. There are no other signs of gold anywhere else on the tractor. Since the S/N is stamped on the transmission, I’m going to assume that i won’t be able to use it to figure anything on the tractor since it’s not original. Are there any differences between a 901 and a 981? If there are any differences how can I nail down exactly what I’m working with? Sorry if this is a novice question, but I haven’t ventured this far back in vintage. I only purchased the tractor for the rear wheel weights and power adjust rims, so I did very little research into the model, but my curiosity has now been peaked. I haven’t been able to find anything explaining exactly what the differences are.