Deuce - TPI air ducting pictures
 

Deuce -
Here are the pictures of how I ran my ducting on my Mass Air TPI. I bought the 90 degree elbow from www.jagsthatrun.com It has a 3" inlet and 4" outlet.
I bought another 3" x 3" 90 degree elbow and I planned to route the air cleaner a bit further away but it works real well where it's currently at so I haven't changed it.

Thanks for the pics. I have them saved now!! I'm running the Mass Air on the 383 and was tinkering with a few different ideas for a "cold air" system for the air intake.

I'm going to have to get that elbow for mine. I have this flex tubing stuff and it has to hurting the power.

Check out Air Flow Systems. They have rubber elbows and reducers and metal 90's among other stuff. Look under the headings in the left side. Specifically "Rubber Hoses and Clamps," "Exhaust Elbows'" and "Intake Tubing."

I'm about at the point of adding ductwork to my TPI. Thanks for the leads

I was going to find some ducting that was factory, but then I can't run a engine driven fan. Only electric fans, which I haven't had the best of luck with in the 5L Mustangs.
I think JTR is the way to go!!