It looks like you have a Berkely JC pump, but that bowl is like nothing I've ever seen before, but keep in mind these things originated from irrigation pumps used on farms, so it might be a first generation pump based off of something used commercially, you can always find a regular JC bowl on ebay or craigslist, those thing are a dime a dozen, but if the boat go's, and you have fun with it, screw it I would just run it,

P.S.- welcome to Hot Boat