I am trying to block off the coolant lines for the Throttle Body Bypass at each of their respective end points for a cleaner look. Would a vacuum nipple (thick black kind) and a clamp hold for the long run? I guess I can just run the longer one over to it (from the T-stat to the rear rotor under the UIM) if need be.

Look at this it only took one minutes and does the same thing. Look at the whole thing I showed where the pics were also. Most people got help with it. I looked at screw last week and no rust or corrosion either. Better cold weather performance and no more detonation.

http://www.rx8club.com/showthread.php?t=121249

I just routed the hose from the T-stat to the rear rotor end and left it like that. No splices. While I had the UIM off, I Sea-foamed it. I found the runner closest to the trans to have the most carbon in it for some reason.

^^ That's what a lot of us have done....