Not a GP cap 21.. I have the 72" Cap 21 from Great Planes, and the landing gear setup is totally different. The LG for a GP Cap 21 are two pieces, bolted into the wings a bit outboard of the fuse.. not right by the fuse. Plus the front of the plane is more rounded, not squared. The GP Cap also has a motor box built onto the firewall. Can see a pic of a Great Planes Cap 21 kit if you click on the My Models link Page 2 of my models.