My 300V runs inverted in a GP "Patty Wagstaff" Extra. While no 3D machine, it hauls with authority.

No nitro, just 85meth/15synth (motul micro). Plenty of lube - valve covers are always full of oil (well, it is inverted )

OBG managed by a McDaniels unit and 4.8 volt NmHi pack. Prop is a Wooden Xoar, 22 x 8.

32Oz tank with twin pick ups.

No pumps, regulators etc ... runs fine.

And then there is the noise .... it sounds soooo sweet taxying out to the strip.

I must post a pic one day.