Go to the Tower Hobbies site and compare the two planes. They are practically IDENDICAL. I wouldn't even consider trying a .46 in it.
But:
The Tower Trainer was designed for the beginner who wants an almost-ready-
to-fly trainer. This plane comes with a guarantee that the modeler will
successfully learn how to fly this plane or Tower will replace it with another
trainer of up to equal value (providing the owner learn under the supervision
of a qualified, club-designated instructor and fly at an AMA-chartered club
field). This kit has a 90-Day Warranty against manufacturer's defects (this
may be doubled by the purchase of a Super Saver membership). It also has a
60-day "learn to fly" guarantee when flown at an AMA-approved field with an
AMA instructor (this is NOT doubled by a Super Saver Club membership).
If you want to, you could get your AMA instructor to fly the plane with the .46, and when he crashes it because it's underpowered you can get a new one from Tower Hobbies.....
