I dont think I ever posted it in this thread...
The last batch received a couple updates. I switched the oil drain plug to use this new super low profile, practically flush, -8 o-ring drain plug with internal hex.
I really like the internal hex, not just because of how low profile it is, but because most people will use an allen key for this, which will drastically reduce the torque they put on it. My gripe with the external hex was that I always feared people who are not used to aluminum oil pans are going to eventually damage the threads over-torquing with the long 19mm box-end wrenches. Thats why I made the plug a larger than stock thread to begin with.
I also machined away some material around the flange, giving it a step, for a minor weight reduction. Pretty much negligible but I saw no harm in the CNC spending another minute or two on each pan to put this step on there... its not like im standing there waiting for each part to finish when the cycle time is so long anyway.
