Go to the warbirds thread there are some comments from guys who have flown it. In order to avoid having to add 1.5-2 lbs of weight to the nose the suggestion is to go with gas. I tried to use a 2.1 Moki but the firewall is not wide enough to accept the Moki mount without modification. I will fly it with the os160 and the lead and let you know how it goes.