Gary,
I didn't take any pictures, but I followed the post on pg.13 (
Used a 5/16 bit for the pilot hole. Pretty much the same location. I just took my best guess, didn't do any measuring. Took awhile to get through the casing: 1, I bought a cheap bit and 2 the casing was about an inch thick. After I broke through I let the oil drain. Went back through with a 9/16 bit, then tapped the hole with a 3/8 NPT tap, then put the fill plug in with a 5/16 hex. I put some tephlon tape around the plug just to be safe. Filled the ptu with 75w x 140 axel lube with an oil can. Drove the car about 5 miles to get the fluid moving and no leaks!
Bought the plug from Grainger $6 Item # 4CCF4
Bought the same tap and die set from Harbor freight $12
Genuine Ford Fluid XY-75W140-QL SAE 75W-140 Synthetic Rear Axle Lubricant - 1 Quart $22
Hope this helps!