There are others who build loaders for them. Most every line has them at this time.
I do recommend the manufacturer of the tractor if at all possible for loaders.
Things I've seen,
After-market loaders with higher lift capacities then the front end will hold!
Great way to break stuff! Like the tractor!
Loaders sticking way out front of the tractor taking more leverage to hold the rear down as well as adding more load on the front end and tires.
Trying to fit as many tractors as possible with one frame and kit, Slottted holes for mounts!!!!!
Just what we all need, something else to have to watch everyday and maintain trying to keep it tight to the tractor!
Control valves that don't blend in with the tractor but look like apendages added on.