I got 2 of these and put them on my Blade 350QX2 and my QX2AP. This is the best upgrade I ever did on any of the 350QXs. Just drill 3 holes and put it on. move the GPS receiver back to the top of the battery tray where it should be. Re set the compass and your GPS will be working 2-3 times as good as the QX2 one does.15-30 sec. gps lock on start up at my house and surrounding area. Or you can buy a 350qx3 body and just use the top half and all the holes are already drilled. We all should be very happy they did not change the frame. This was a good move for HH to keep the bodies the same.When you get into the quad if you need any support just call HH. Keep in mind the new foil you get does not go around the compass it goes around the GPS receiver. You will see why they send you one when your doing it. Happy flying.