Hi Dean,
I finished my Ryobi 4 stroke. It weights about 76 oz. with flywheel and coil ignition.I plan on trying glow fired E85 mix or regular glow, if I can make or buy a plug adaptor. The plug is special and very deep. I beam mounted the engine, so I can bolt it up to standard mounts. I havn't had a chance to run it yet, so I don't know how well it will run with the stock 9mm carb. The carb may be under jeted without the air filter. I took a couple pictures. I hope that this works, first time uploading.

Dave