On a recent build of a Ultra Sport 40+ (US+)I decided to lengthen the fuselage by 3 inches. I wasn't sure of the results of this until I was through and put it in the air. One reason I wanted it longer was that I was planning on putting a Super Tiger 90 on the front which I did. I initally thought this might be too long for a 40 size airplane and started to only go for 2 inches but didn't. I knew that the torque of the 90 needed this extra leverage to keep the plane tracking true on uplines and wide open pulls. It also needed the leverage to balance without lead. With these two things in mind I decided to give the three inches longer fuse a try. One way of looking at this is the fuse would be about the same lenth of a 60 size plane with 40 size flying surfaces. WoW what could be the outcome. Well some of the lightness freeks will say it is a bucket of lead that will have negative atributes, possible. Will it be easy to do during the build? It is easy with a little planning if you have building experience. THe plane, Ultra Sport was a prime candidate for this alteration/modification because it is no 3D airplane even though it will do some. The US+ lives up to its name as I believe it is one of the better sport planes out there. I will fly slow or fast and will really cut up with the use of the rear controll surfaces because they are rather large compared to the aileron surface area and will make the airplane go wild in the air. Ok enout about this kind of stuff, How does it fly. Well I can say Great! The plane flys very much like a pattern plane under full throttle flight. It will really move along with that 90 on the nose. How is the landing? It lands very slow and seems to like to land with one clik of throttle until just before touch down. How is the aerobatics? Not a 3D plane but very respectful manouvers can be had but you probally won't want to try slow rolling harriers etc. as the ailerons are a little small. Sure the weight has an effect, knew that from the get-go, didn't care because I didn't plan on trying to turn it into a 3D pane. I wanted this plane for sport flying on Sunday afternoon if you know what I mean. A plane that you can throw in the back seat on moments notice and head out to the field for flying, the kind of flying most of us do or are capable of doing. I bet some of you have done some of the same kind of modifications on kits, if so lets hear how it went so other might gaine some knowledge here.