It is a 60 Inch standard version.

Looks awesome, mines a 48 is yours a 48 or 60

Thank You... It was a pretty easy mod to do. I just wanted to be careful of the 'blind wall' for drilling and fastening on the front bulkhead. I used heavy sheetmetal screws for this, which seem plenty strong to hold the Jack (I can stand on them). If the sheetmetal fatigues over time, I'll figure out a way to back them with bolts, nuts, and washers.
The Jack also serves as a guard against loading Motorcycles and ATVs, reinforcing the bulkhead and protecting the rear of the cab/window.
I placed the mounts 40" apart so I could mount a 48" HiLift if ever necessary - though can't imagine why I'd want to if a 60" was available.
Like I said - having one always on-board with 80' of chain makes be braver :-)