That fitting in your pic is the part I'v already ordered (on b/o) from Tower. It sure does look like that shouldered hole is meant for a pressure fitting, though.

And since you've got to drill a hole (whether in the top left bolt hole or in this shouldered area), I'm not sure one IS better than the other. Unless there is a pressure or lack of pressure argument.

I've even had a guy at out field that said you can drill a hold through the mounting flanges on the engine between the two holes and get the same pressure.

Later.