fruitloop

The world doesn’t need any more of these iwe threads but my prob is unique. Have to ask for help.
I bought a truck that had a motor swap. I have no supply of vacuum to my I WE system. I don’t mean that I’m not getting vacuum from the source, I have no source. Ugh
I know there should be a little black tube coming from the firewall area. I’ve got nothing. I looked all over the intake manifold and the vacuum lines coming out of that are all home runs meaning there’s no splitting off to feed some ridiculous system. I’ve also got evidence of a vacuum leak so I’d like to figure this out and hopefully solve a couple of problems.
I don’t know what year 5.4 got put in this truck and I wonder if maybe there was a different vacuum port on the 07. Anyway I’m just talking crazy I have no clue. I’m hoping someone out here or a couple of you might know the answer and maybe even take a look at your truck I’d appreciate it a lot.
Thanks for reading. Have a good ‘n.