from what i have heard, a J230 airframe with a 100Hp 912 performs equally as well as one with the Jab 3300 fitted. though i dont have any facts on hand, could possibly be just the advantage of a different prop. who knows, but the info i have heard is from pilots who have flown a 912 equipped J230/200 so for comparison of similar performance, the 912 would be equiv of the 3300. as said before, this is based just on hangar talk.