I had surprisingly good results from a very cheap pump, Kemso. Ran great for two years or so. Only took it out cause I found a brand new OEM unit that was going cheap. The kemso pump is now a spare.
It's a rebranded aeromotive stealth pump and I doubt very much it is made in Japan. https://rover.ebay.com/rover/0/0/0?m...2F163973502473