I did exactly as you are planning on doing on an 29% Edge. It had the 44 and I switched to the 50.
Mounting is EXACTLY the same. I have the hangar 9 aluminum mount so it was just a matter of unbolting the
4 bolts and swaping engines. Same should be true if you have the GP mount.

Other than that you'll be pleasantly suprised with how much more power you'll have now.
Even on the break in mix!

Take care,

Stratos.-