I bought that little plane used several years ago at an auction, I was after the nice OS .46 and servos. not the plane. I got it all for 40 bucks, pulled it apart and stuck the plane under a bench and forgot it. A year or so later I remembered it and cleaned it up and installed A OS .46 LA. Was I ever surprised!! That really is A nice flying Extra. The .46 LA was just fine and it can handle any of the newer/better engines in the .46 range. Being an ARF you want to go in and do the regular ARF fixes like reinforcing things and using some real glue to the parts you can reach plus fuel proofing. Other then that it's A great plane and will fly just like any other size Extra, just does things A bit quicker. Have fun and don't worry.