As an FYI...I had looked into the Tsukayu Jumbo Strong bags for my 2009 1700 Classic LT. I measured them out and made a template to test fit, before I bought then.
The exhaust side is the problem, at least for me...with the twin pipes (Vance & Hines Big Shots) and the way they are shaped, the Tsukayu bags would have to run too high up. This means that they would not fit the shape of the back end properly, and would interfere with the passenger legroom.
They could be mounted back further, or still make work if you have a lower slung exhaust.
I made some notes on the dimensions of various hardbags....
OEM Classic LT Softbags
20” x 11” x 8”
OEM Voyager
25” x 16-18” x 10"
OEM Nomad
27” x 17” x 8"
Tsakyu
27” x 15.25” x 10”
Cavalry
25” x 14” x 9”
Cavalry Fiberglass
26” x 13” x 9"