Biohazard

I bought one at NAPA about a year ago. Can't remember what I ordered though. Mine had factory air but it was removed long ago.

Here's a pic of the one I put on. The bypass hose (hard to see;on the right) is huge, as you mentioned. I found a brass fitting to fit it. Not resto, but that's OK. The third one I just left plugged. Doesn't look the best but, it works!