Is this a stock power steering box.

it looks like an amazon special.

https://www.amazon.com/Steering-Gearbox-Challenger-Plymouth-Chrysler/dp/B0C4V1WGX4?tag=fabo03-20
i have no idea what it is, or who makes it.

ETA: pic
51QHVeKYQaL._AC_SL1000_.jpg