I bought a universal Class 3 hitch kit from Princess Auto here in Calgary. They had a pile of them on sale for $89cdn. It had enough play in the assembly to adjust to my 3600, and is very sturdy once all tightened up. Only had to drill holes in the frame ends.
This one hangs down a bit... definitely not hidden, but it has bolt-on angle braces rather than long side-plates. Made it quite flexible for installation.


Current fleet (subject to change w/o notice)
\'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run.
My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787.

Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.