Thank you "Red"

Actually that is what I thought it was (a vent tube for pressure build up).

Vacuum -
***will cap all off, except the brake booster***

Fuel feed (lines)-

If I cap off the brass nipple and remove the sensor (Delphi 1997278)
It only leaves me (1) line (the feed line)

*** I am not finding the return line. Is there one? If so, where?

* If not, then I will get the Corvette filter and plumb it in.

I feel like I am 16 again (but feeling I know less now).

I have searched and read, searched and read and searched and read, so much I think
my eyes are bleeding.

All this just from laying Allen's harness next to the stock one. Wait 'til I start hooking it up.