Yup. I have yours in my shopping cart; and thought... well maybe I should crowdsource this decision...
These work well, specially for 12v. There is also a 6v version https://www.ebay.com/itm/1433189756...52RmIyQhdIiYNROLkRBJUJ6S4a|tkp:Bk9SR8Tr1KGzYg
I use these as well. They drive my Mississippi, Tromp, Steve's Tromp, and soon my Chester. Good motors.
I’ve used mabuchi motors since I’ve been in the hobby, you can browse their site to check motor stats, the last portion of the part# varies a bit but generally I look for highest power output in the class, then look on eBay and find one with same/similar part# and same rpm https://product.mabuchi-motor.com/search.html?method=4