So a while ago I built a 120% mini arrow, which is fairly close in size to the FT Spear. It's a great flying plane but as arrow owners would understand, there isn't a lot of strength in the pod keeping the two wing halves supported, and they tend to get a spongy feeling. I crashed recently and messed up the nose and electronics pod. I decided that as the spear is based off the arrow, I might put a spear fuselage with its great box spars and strong box in the arrow. I might move the pod back a little to allow more batteries/gear so I can make this more of a longer range fpv platform. This mod would probably work fine with the normal sized arrow, just make sure the fuse is deep enough for the batteries you want to install.