My Titleist 910 D2 is an 8.5* and is normally set with the loft lowered to 7.75*.  I increase the loft when it's wet enough that everything is all carry and no roll.  I hit it at a Golf Galaxy beforehand, and then ordered it online a month or so later, this was a few years ago.  I not fully aware of the lofts of the current latest 913, but I'd think an 8.5 would be out there at most places and I'm sure the loft is adjustable up to a 10* and down to a 7.75* like the 910's. 

That kind of answers my question.  I currently play a 7.5 910d3 and have it lofted down to 6.75 (god knows why)   .  I got lucky when i ordered it because i hit it like crazy .  But i guess maybe the majority of golfers dont need 7.5 nowadays because they dont have enough tine to practice.  Anyways, still it would be nice for other golfers to try them out in a shop.  Just because a guy is an amateur doesnt mean he cannot swing at 120 mph.       Just like somewhere in the world, there is someone faster than usain bolt.  That really doesnt care to run!

 All surefit cart fitters have an 8.5° head and all Advanced Fitters have a 7.5° head as well as an 8.5° head in their matrix. Here is the link to finding a fitter in your area:  http://www.titleist.com/find-a-golf-shop/#fitters