I shoehorned a Jett 50 into a Wildhare LR-1 !
doubled up the firewall, made my own motor mount and exaust extention.
Then I thought about mounting a Jetcat P-80 , 18 lbs of thrust, the wet wing- fuel tank would hold about 1.5 minutes of fuel[&:]... and the Rx and ECU would get wet too![:@]