The coolant lines and swirl tank plumbing is mocked up; the two coolant lines stack above each other along the centerline of the car. Also finished is modifying the radiator, moving the lower hose fitting, plugging the hole, and replacing the radiator cap with a bleeder fitting. It’s nice to have the radiator completely modified, though it still needs to be leak-checked.
As for the center “tunnel” (all 1.5″ of it), it’ll have a removable side panel for access. I’ll probably use round 1.5″ tubing for the top to give the shifter something solid to mount to.