I have flown all of mine with the 46 LAs and it's A good match but maybe not A good choice for 3-D. I broke in an MDS 58 on an Up-Roar and when it finally broke in it was way too much power. The MDS engines have junk for A carb and don't like to run so don't even give them A thought. From what you are showing then the TT 46 is the best choice, we use them A lot for racing and it's A good engine. Cheap for what you are getting too.