One motor I have found to be reliable and at $200 very good value they are the DMC 6.5 hp motors. I have fitted several to the Deutscher 22 inch slashers and never had a problem. Only issue I think with fitting them to a standard mower base is that they may be a bit heavy and they have a 25mm shaft so you would end up with a boss problem. This would be such a massive improvement over buying one of these $1000 pieces of Briggs garbage. Weight is my only concern