I've got a Saito 91 installed upfront.
It has a TruTurn spinner on it with the solid base for more weight.
The battery is so far forward under the tank it thinks it's in the engine compartment (have it up against the firewall) in foam, with a piece of 2" foam block behind that for a separator and the transmitter under the fuel tank right behind the 2" block. I also have the transmitter tray as far forward as I could locate it.
Before the covering was on, it was going to take about 3.1 oz's with the weight on a line with the firewall. I suppose it will take a bit more now since there is so much more MonoKote behind the CG point. Well, I'll find out this weekend when I put it on the CG machine.
I think I will go with the suggestion to build a small flat box to hold it in and mount that in the engine compartment.
Thanks again everyone..................