Remote for 135 Orchard

[Dirtleg]

Well now that I've gotten the steering sorted out on my tractor (finally) I am looking to add a remote for my haybine. I know there are remotes available I just want to make sure I am getting the right one. Since my tractor is an Orchard model is has the 165 rear axle. What I don't know is whether or not the hydraulics are different from a standard 135. How do I figure out what to get?

Thanks for any help.