Engine for Dago Red
A friend if mine has the Dago with a Saito 91 4 stroke in it. Sorry to say its a hair slower than my EZ P-51 with the YS-63 in it. But these birds are quick. I would stay with a 60 size 2 stroke or 90 4 stroke and throttle back if its too much! The 40 LA probably wont get it off the ground considering it weighs 7lbs!
Good luck!