My Chevy truck has the 5' 7" bed. I went with the PullRite SuperGlide 12K model 3100 hitch for short bed trucks.
I never had to worry about the front cap of the 5er contacting, or even coming close to the cab. I believe I had 17" of clearance from the corner of the front cap to the cab, while in a turn. I even installed a pin box bike rack that had the capability of transporting 4 bike(I only carried two).
I sold the 5er with the hitch & capture plate last Nov.; and the guy who bought it did not need the hitch. He had a long bed truck. If you're interested in it, I could ask him how much he wants for it. The hitch is still at my house. PM me if you'd like.
"It is What it is."
2006 Chevy Silverado Z-71, 4X4, 5.3L, 3:42, 100% Amsoil Lubricated
2005 Jayco Talon ZX24-E Toy Hauler
Prodigy P2 Brake Control
15K Putnam XDR Class V
10K Equal-i-zer WD Hitch
Firestone Ride Rite Air Bags
2005 Kawasaki KLR650
2009 Doodlebug Mini Bike