Hey I am glad to see your post! I built one Uproar and am building another right now, I was considering making a twin Uproar but I was also considering using the Fun 51 kit or kits in this case. Do you have pics of the fun 51 twin??? I would really love to see them !!!! I was also thinking about your idea of adding retracts... with the tank hanging out there in the profile style and the fact that is has such a thick wing, I am not sure you would gain much speed to be honest. It might look pretty cool though. I am about 99% sure it is the same wing as the Uproar and really also the Dazzler, why mess with perfection? I consider the Uproar to be one of the best if not the best sport Aircraft ever. Oh what engines did you use on your Fun 82 twin? I have a couple of great running Supertiger .29's but am wondering if that is enough? I also think 2 GMS.47 engines might be overkill!