50 amp 90* plug REPLACEMENT

Looking to swap my current plug for a 90 degree, to lessen weight drag when plugged in.  Found lots of 90 * adapters 50 to 50, with short cords.  Really just want to replace, not extend the cord.  Would need the locking ring.  Searched other forums, and the net, but nothing I can find.

There are several listed on Amazon

Found lots of those. Really only want to cut off my old “straight” female plug and ADD a 90* in its place

It's not that much weight, just run the cable straight to the ground.  Or, get one of these right angle adapters plus a standard 30' or 50' 50amp plug in cable.
That will give you the right angle and essentially the same total cable length.