71 Valiant

Hard to tell from pictures, but you mentioned you have supply & return hoses ran, and it looks like 2 oil lines going across the top of the engine. Is one your oil "supply" and the other your oil "return"?

The reason I ask is that oil return is gravity fed. It has to re-enter the block somewhere below the turbo where it can just drizzle back to the pan. Typically the drain line is about 3X (or more) larger than the supply line Unless you have a return pump (used for rear-mount turbos), you will be burning some serious oil.