Are those air tanks on top of the frame? They look like they're off of a big truck. Since you don't have air brakes, I assume your using them for the air ride. They should supply a train horn if you want to use one.
'65 C-10, 65 L-60, 65 C-80, 72 C-60 & and a bunch of old Chevy cars. Never time to do it right, always time to do it over.