I've mounted a Syssa SAP 180 30cc on the front of mine. I had to move the cowl forward about 1/2 inch which meant longer standoffs. Once Iget them from Gravy Goodness, I'll see how it balances.
With the stock standoffs, I had to add 2 pounds of weight to the front. I moved the battery and throttle servo to the space just behind the firewal and removed the weight.
Working in that area of limited space proved to be more than my XXL hands could stand.
I made 2 5/8" square cut-outs on both sides of the fuselage. Smith Precision Aircraft made up 2 hatches for those spaces and I can now access that area easily with great looking and very funtional hatches! Thanks Jason for the awesome work!
All that's left to get it back into the air is the standoffs and gluing in the wood doughnuts with attached blind nuts for cowl attachment.
The Syssa is a brute for power, smooth running, easy to start, and really hauls this aircraft around with authority!
Best Regards!
A few pics....