I have a 91 Trans Am with a 305 TPI. it looks like I am leaking antifreeze under the throttle body. I can see it dripping from a small hose next to the thermostat housing. it is kinda below the center of the throttle body. What is this hose called and where can I find a new one?

 

The hose is called...... Well a hose? lol
Take a look at this, this is what most of us do.
https://www.thirdgen.org/coolantbypass
I honestly don't know if you can still get that hose, I think I remember someone saying on here that they pretty much discontinued.
I take it that you've tried your local parts stores already?

 

Just to make sure we are talking about the same thing, here is a picture of the hose that I am wondering about.



I checked all my local part stores and Napa might be able to order one for me, but they have to check to see if a different store can send one to them. They were calling it a Bypass Hose. The other local stores didn't have anything even close.

I am not sure exactly how that link you posted works with my engine. I don't see the same hoses on my engine that are shown in the that diagram.

 

Basically what that diagram is showing, is taking the hose that goes from the heater control valve and running it into the intake manifold, bypassing the throttle body all together. The throttle body does not need coolant running through it, which is what the U shaped hose basically does.

So basically take the hose off the left side of the throttle body and put it into the intake manifold (where the U shaped hose goes into from the front of the throttle body). Obviously you will need a longer coolant hose with a 90deg bend on the end to go into the intake.