Try BAT inc. for adapters. In my case I used an early engine oil cooler on the 3.0 motor so that the early "S" hose would work with the early oil tank to then engine oil cooler. A special hose was fabricated to run from the oil scavange to the oil tank. I'm not running a front oil cooler at this point. Sounds like you'll need adapters and or some custom lines to get going, don't think you have the parts on hand to make it work. The '73 tank sounds like a plan.
This document has some good info about adapters, see page 16 for info about 911 oil line systems.
http://www.batinc.net/files/kits.pdf