fat bike sumo izip e3 sizing modifications.

I loved my Diamondback/Izip Overdrive Exec. I had the Rad Rover Fat Bike, but the hub drive was a drawback for me (great bike, just hated the hub). I had been "eyeing" the Sumo since it came out in 2015. Not a bad price (relatively speaking), but I still could not afford it. The 2016s came out...