Product review (5 stars): Not an easy install, but the motor works fine.
This was definitely not a trivial one hour project.  I recommend replacing the motor from the front, if possible.  I followed the diagnostics sheet in my dryer for troubleshooting and it had me remove the back to reach the motor.  That involved disconnecting the gas, which I didn't really want to mess with.  In retrospect, I was pretty sure it was the motor and I definitely could have gotten to it from the front.