Right, Chuckster, but evidently Ford went the cheapest route or maybe quicker installation on the engine ass'y line rather than going with the flex line. ATS made an upgrade from their previous non-wastegated kits. All their wastegated aftermarket kits came off the main oil galley. Like the truck shop owner who sold me my kit back in '93 said, a bit quicker oil pressure to the turbo bushings on startup. Also easier installation for sure, you don't have to remove and remount the oil sender.
Alec, the ATS part number for the oil feed line is DSLOO138 if they still offer it. If not, it's AeroQuip common line and common fittings from any hydraulic or parts house or truck shop.