Today was fairly productive, then the weather forced me to move the car inside.
First I drilled the sump with a step drill for the return
Then I roughly bent some 16x1.6 tube in the vice with a piece of round bar as a lever
Some minor crushing but nothing that will be a problem. Then I MIG welded the tube to the sump inside and out
I need to die grind out the inside weld a little but I'm sure it will seal
Next I enlarged the opening for the oil pickup slightly to make it easier to install
I took roughly (very roughly) 15mm off around the pickup
Finally, while the oil return weld was cooling down, I relocated the lower radiator mounts so there was room for an intercooler
I still need to cut a bit more off the intercooler in order to make it fit properly with the standard size battery, but once the garage has power I'll be able to TIG weld it all back together.
Tomorrow I'll be finishing the radiator top mounts, reinstalling the sump, trimming the fan shroud and radiator hoses, then doing an oil and filter change!