You could always buy a G-62 and convert it to electronic ignition. Also put an aluminum muffler on it

It'll cost you the same money in the end. The G-62 will turn a bigger prop at MORE RPM than any DA50.

You'll pay a small weight penalty over the DA50--but you don't get 12cc more displacement and 1000RPM power increase over the DA for nothing.

You can actually BUY A G-62 right now. You can also get parts for it. You can get a C&H ignition that will bolt on or send it to RCIGN1 for a custom ignition system thats installed right in the cup mount. Both work equally well.