I have an older billy goat walk behind debris vacuum. Unsure of model number as they have all worn off. I pretty sure it was a kd series. Just dont know the actual model number. Has anyone ever put a predator motor on these (the harbor freight ones)? I dont want to spend money on a honda or briggs cause my guys dont check the oil as often as they should. They already blew 2 engines on it. I'd rather put a cheap engine on it cause of this reason.