You asked the question if i would run a truck with that controller and that motor at 63 mph, i say no, because the amps will be skyhigh...

The 9918/9920 is a nogo too.. It's geared over the moon that way.

Then a 36120 or a 20120 would be a better choice or probably a 36150?!

If you're going to get a new controller then you may aswell up the voltage.If 8s lipo is out of the question then i'd run 24 gp2200 on that motor,then a 28/51 will see 60mph on 3.3:1 diffs,and the amps will drop.