I guess since you have the AX for sale my question is; will it fit in the Ares? I suppose it has to do with length of engine compared to the Aero Tiger.
I will check but it should, only the head cut out on the cowling would be different, The AX has a small 5 sided head, the THunder Tiger has a squared head, the Magnum has both round and squared heads, the webra has a round head, and the Evolution has a slightly different squared typed head
Randy