While Mabuchi will likely make custom windings for their customers, their catalog only lists two variations. One with a 3.8 amp stall current and with a 10.9 amp stall. The former is listed as a 24 volt motor. I suspect you would have to do some digging as the 12v 11 amp motor seems to be the more common version at the auction sites
https://product.mabuchi-motor.com/detail.html?id=119
https://product.mabuchi-motor.com/detail.html?id=120
Pete