The MECOA .32 is a real nice little engine. You will like it. It is very small physically.
The MECOA .32 is a LEO engine made in China. They are also sold a MEGATEK engines by America's Hobby Center. Or you can buy LEO's from
www.justengines.unseen.org.
There is a .37 LEO that is in the same case as the .32 and it is a real screamer. It will outshine your TT 36. Especially with a bigger carb on it. Read all about it on the web site above. Megatech also sells the .37 but MECOA does not. They only have the 32.
If you put two 37's on that Twin star, you better be worried about the covering peeling off on wide open throttle. Two LA40's will cause a Twin Star to peel the covering and the LEO .37 has a lot more power than a LA40.
To answer the other part of your question, the MECOA's have been reliable. But in the past there have been Mecoa engines made by other companies beside LEO. Some of them were made in the USA by MECOA themselves. As a comparison, the MECOA 46 is not as powerful as a OS46FX or the TT PRO 46 but is a easy starting reliable engine.
enjoy
jim