Thanks builder Jim, I'm mounting the engine the same way I did my G38 in my BUSA cub....T nuts from the inside of the box and 1/4-20 bolts thru from the inside with threads on the outside and bolt the engine with nylon insert aircraft nuts. Pulls against the T nuts. When I first tried to mount it I couldn't figure why when I lined up the center of the box with the center line of the firewall why it was not right, then I realized the box has to be offset due to the right thrust built into the firewall....with the offset this puts the center of the engine at the prop right on the center of the firewall duh! I e-mailed edr and Andy said the no hassle way to go if you don't like wiring is the way you went, I told him I didn't need the charger and he said they can ship without and just take the cost of the charger off. Aren't you about to get in the air with yours? The 16th right? Do we get a report that evening?