I've been doing some looking around on the net for engines.
There are just too many choices to say one is better than the other. Each engine probably has its' own little niche that it fits perfectly but I'm unable to find one that appears to fit my
Extra 300 XS.
One guy says the DA-50 flies great, OK fine, it costs $549.00 w/o muffler or mount.
Another says look at the ZDZ-40, Ok fine, its' $460.00 w/o muffler or mount.
Looked at the RCS 140 and 180. ????????
It appears that most of the engines out there are going to weigh in at almost what I have now, so there won't be any real advantage to changing.

I need something that will pull this lead sled and not need tons of wieght in the posterior to balance.

And so the search continues.........................