I have a Saito 120 in mine. For my style of flying it provides all the power I need and then some. Short take offs, EZ safe climb outs, and throttled back scale like cruising. Not to mention the great 4 stroke sounds! Your ASP twin will do all that too plus have the cool factor of a cylinder head sticking out each side of the cowl (J-3 style).
Don't know what else you could wish for!!