RE: F-15 for MW54?
If you just have to have an F-15 for that MW54 your best bet would be to see if you can find a old Top Gun F-15 kit and reinforce it for your turbine. The "Pro" version is more scalt like than the original Byron version. I built my F-15 Pro DF planning to convert it to turbine later. Unfortunately it went in due to a radio problem before I had the chance.
A friend converted his. It flew well but was quite heavy with a P-80 in it
Joe.