RE: ESM 82
You might look at the Evolution motors as they have a lower profile than others. I tried to fit a Saito 36 in the cowl on mine and it stuck out way too much. I ended up going electric because of that. I am trying to fit the saito in my LA-7 and it still will stick out of that cowl too. It's the perfect length, but too tall. I am thinking about trying a Evo 30 or 40 instead as the rocker arms stick up too much.
Jeff