It's a great engine. I have mine in a Sukoi. I use a 14/6 prop and it will turn it better than 10k if asked. Keep the nitro down to 5% like hobbsy said. I use a slim line strap on pitts style muffler and it works fine. Mine also has a dynamix carb which I believe works better than the TN. Mine also is a standard ring, not dykes, so look at yours tobe sure what you have. The paper work for the Webra speed engines hasn't changed in 20 years and is the same for all sizes. If you still need the paper work send me your email and I'll send you the paper work.

Denis