Make sure you check the part #. The 7550 has a 1/3 HP motor and the V-MAXX G2 1500 (the updated name for the 7550) uses a 1/2 HP motor.Looks like the auger motor/trans are the same as my 7550. I'm not sure the spinner is compatible.
Yep different parts numbers. However snowex has a sneaky habit of upgrading parts and changing part numbers, just to keep the same footprint and the parts fit. I'd bet if you strip that spinner to the bear bones and put the rounded chute for my spinner on it, it would fit.D8694 Part # for Trans
D6872 Part # for motor
83764 Part # for Spinner Assembly