Pictures of 2 modifications I made. First I opened up the oil feed hole for the forward pinion bearing, there was A LOT of casting flash in the inside of the hole. Second, I drilled and tapped the upper boss in the case for a fill port, I have seen some boxes with the vent in that location already and it makes it much easier to fill the box from the top to make sure there is enough fluid in it. I use Lucas Oil Stabilizer in the gear box, it is the best for dealing with high pressure and temperature conditions.
"Know the black and white before you walk in the gray"
