[v2comp]

I just purchased this cart yesterday from someone that picked it up last year at an auction. its obvious to me now that this thing has been fairly heavily modified and I'm going to need some help getting it back together.
I am going to attach a few pics and specifically am interested in if anyone can easily identify the controller on it. that's where he said i should start. So it turns out that its a GE universal series controller, but no idea of the amperage since the stickers are all worn off. If anyone has any ideas of how to figure it out, that would be helpful. or, is it? Can I just replace this thing with another rated for this 36v / 8hp motor considering its lifted and has these huge tires? any help will be appreciated.