Hi Curt,
Good to hear from you again. You're Monocoupe looks awesome!
They didn't have the radial mount set back when I converted mine last year. Your mock radial engine collar looks fantastic! We won't mention this extra cylinders though.
You'll be happy to know that I fly mine on a 4s5p Kokam 1500 pack now to get really long flights. Kokam USA will soon be releasing a new 2AH cell that can deliver over 30amps continuous. This means that a 4s2p configuration will double your Monocoupe flight time and be much less expensive.
Let us know when you fly it. Remember to use right rudder on take-offs and she loves to turn on a combination of rudder and aileron.
Good luck!