anybody ever put a drain plug in their 8.75 housing

i did one in my 73 D100. used a 1/2 inch drain plug with a nut welded on the inside of the housing, and i cut 2 reliefs in the side of the nut itself so the gear lube would drain completely, used a nylon washer with it, worked very well and i didnt have to worry about breaking it off being 1/2 inch.