Does anyone know the size & thread size of the trans fill plug in the 1994 b3000 5spd? i have zero clue what happened with the last guy that did it.

it’s now about an inch and half long and welded tf on there

 

1. I'd loosen the FILL plug before I monkeyed with the drain plug.

2. I'd purchase a replacement drain plug BEFORE I attempt to remove the existing drain plug.

Sorry, don't know the size...do whatever it takes, likely has been overtightened. Pipe wrench may help, and use some leverage.