I was going to get a Danny Gray big seat with backrest... but they don't make them for Dyna (WTF????).

I'm noticing this a lot. WTF is with people not making stuff for dyna but only softtail/touring??

Anyway, I've had a mustang before and that was ok, but pushed me forward and the actual room on the seat was kinda minimal.

I'm trying to find a more spacious seat for my dyna (with backrest). Suggestions? Is there a stand-along backrest for the rider that I could use in conjunction with the danny gray seat?