The Engine is a Rossi .45, and I got quotes from Boca for kits. There was three types of kits ECO. HS. and HP. I bought the High Performance. Just because they have seals to seal the crank case. I don't know what the inner bearing looks like. I'm asumeing that it has a polimer cage insted is a steel one :lol: Knowing that the engine is going to drink lots of water all summer, and it wont rust. :lol: