Aftermarket oil pump pickup height issues

Correct, my tray is lower in that picture but it did all fit together at the standard height. The weld at the pump end  just contacted the tray on first mock up, but a quick tap with a ball pein hammer fixed that.
My engine is a 318 so i have shorter main caps than the OP. The threads this block were tapped deep enough for me to be able to ditch the 2 washers that make up the difference in cap height and lower the tray.
I didn't like how far away the crank/rods were from the tray with the first setup but the pickup and sump did fit with the tray at the higher position.
I am using a stock replacement pan with a baffle plate not the milodon pan.
I'm not knocking your work. I would have done the same thing, I'm certain it works great. Some of the guys on here aren't going to have the skill and tools to make those adjustments so it should be noted that this could be an issue if not using the Milodon tray. Looking at the OP pics he is going to have to alter his tray or that tube to make it fit. If that's an issue and he has the time and funds he may be better off buying the Milodon tray. I don't know if the factory pan and the Milodon are exactly the same depth. All I have is truck pans and the Milodon.