Hello Dar,
Good to hear that you think that cooling will not be a problem. Matching the ports is a minor obstacle, since I have access to a mill it is not a big deal to enlarge the port on the muffler. It will still seal properly so no worries there. The engine will go into a World Models giant scale P-51, there is very little room for a silencer and so the slimline was the only thing that I could find that would even come close to what I needed. There are very few mufflers available specifically for the MVVS 2.15, even less if you are looking for a compact one. I will send a picture soon to help clarify my situation.


Regards, Johan