I'd try to give it a shot! Return that LA.....they're a little low on power anyways. It would go well on a Super Sportster .40 size!!

I ran a 14oz Dubro square tank with modification. The Tower motor will run great with that 12oz flex tank though. Had I known about it fitting well I would have put one in. The Tower motor is AWESOME in the Extra!!!!!! PM me if you need any info about it. There are a few other threads about that plane too under Airplanes Beginner Forum. Just do a search.