I recently bought a MT P-51 .46 size and flew it for the first time today. It flew smooth with a little trimming and a lot of nerves going through me. I liked it, but it seems a little slow. I have a Magnum 91 4 stroke and wonder if it will fit. Any suggestions on if it will fit or what other engines I can pop in this bad boy to get some speed!?!?!?!? I have a Magnum 46 (2 stroker) in it with an 11x6 prop.