Dont forget, you may need to lower the tank if you invert the motor. The center line of the tank needs to be between 3/8" below, to even with the spraybar in the carb.
Agreed the tank to carb distance is oh so important. If you don’t get tank/carb relationship correct you will spend more time fiddling with engine and dead sticking than flying.
Inverted engines often act like they have a terminal case of PMS. It is so bad they are going to die from it.
Bill