gl tank will be hit when you steer... I set one on a deluxe/standard frame to see...
you could do some mods and shorten the seat up front, but the forward mount for the tank on the frame would have to be set back to make it work...
the neck to forks offset on the triple tree is a bit further apart on the gl's too, so you could gain some room there... but then you'd have some instrument mounting changes too...
Lots of little things to consider swapping cx and gl items....