Long-winded, but bear with me for a moment:
Considering the location of the feed on my car, I don't want plastic or sheetmetal. They're way too low for that, and would be damaged in no time, That'* why I chose the exhaust tips, and armor-coated them.
The duct for the SC cooling and TB cooling will work very well with the crossover heat shield. The cold air on top will displace the hot air better, and help force the hot air under the heat shield. This would probably benefit the NA cars as well, and it makes a good use for the passenger side scoop. I'll be taking temp comparisons of what both scoops do to the cooling when I get it all done. The finished look of the SC/TB (or upper intake if you prefer) cooling duct is fantastic. It doesn't look redneck at all. I should have it mounted up later tonight, even though I haven't mounted up my final scoops.
The tubing for the SC/TB tubing comes in through the passenger headlight hole. I had to shift my Optima battery slightly forward to allow room for the 2" flex pipe. It then runs right to the corner of the radiator where it mates with the 'nozzle'. The nozzle is a simple 45° PVC "Ell" with a flare on one end (electrical, not plumbing). I cut the other end at an angle to distribute the air over the area I wanted. The nozzle mounts parallel to the radiator top (there are holes there already to mount to), and 'sweeps' to the driver'* side and firewall (direction, that is). This is painted the same as the ADTR intake and strut bar. A very finished professional look.
The ram-air feed on the driver'* side for the CAI is fed in the same manner, but with 2.5" tubing.