When I was building my p-8 Don Lowe told me the best flying Phoenix he had, had the pipe through the canopy eliminating lateral balance issue. If memory serves the motor was a Rossi but I do not remember for sure. a short stroke pipe seems like it would fit well. The only issues I can think of would be fuel tank placement over the CG might be a little difficult and internal heat inside the fuse. This is the reason I decided to invert my Hanno in my p-8, heat, fuel tank, balance and pipe size. After all who would no better than the man himself.

Nice airplane above.

gary