Hi Dave;
If the .36X has holes drilled and tapped, it is probably the same as the .40 R/C muffler spacing. I think they shared the same basic case design? If there are no holes drilled and tapped, then just about anything that has holes that line up with the boss on either side of the exhaust will put you in business. The exhaust is pretty narrow and that is what will be the defining thing for a good fit.
Type at you later,
Dan McEntee