I think it's great that you're this supportive .. is he wanting the stunt plane in .60 size ? Does he want to put that engine in a stunt type plane ? For that type of plane, there are a variety of sizes, but look at the Local Hobby Shop and check on kits (ARF - Almost Ready to Fly) and check on the Cap 232 and Edge 540 .. there are a variety of sizes

Good Luck !