Have you tried Don's hobby? I bought mine there a few months back. Don is very good to deal with, I had to wait about a month for mine, as there was a serious shortage then. I thought they would be decently available by now though. There were tons of posts last year on RCO about this and several other engines in that category. Wish I had the specs handy for you. I won't quote from memory, as I wouldn't want to mislead. I can tell you, my research led to it being the best for my needs in my opinion. I'm putting it in a Midwest 27% Extra. Give Don's a call, he's in RCModeler magazine.