Went to Advance Auto and bought a 3/16" vacuum elbow, 6' of 3/16" vacuum hose and a 1" hose clamp. Total cost about $8.00. I had some zip ties and RTV laying around.
Remove the fasteners from the shift boot and tunnel cover plate. No need to completely remove them, just rotate them around a bit and up out of the way. I tied them off to the steering wheel. Locate the breather cap at the front top of the shift tower.
Use a pair of pliers on the top of the metal cap. Gently rock it back and forth while pulling upward. The cap will pop off and leave the vent exposed. There's a spring and rubber washer inside the cap. Discard these three parts.
The barb on the new fitting is just a bit too big. A little sandpaper on one leg makes a perfect fit. This leg will go in the vent hole.
Apply a thin bead of RTV to the sanded leg and press it firmly into the vent hole. Point the fitting toward the left front tire so the hose will clear everything.
Attach hose and clamp securely. Route the hose over to the frame rail, forward and up the firewall, using zip ties as you go. I followed the fuel return line up into the engine bay. Make sure the hose clears any hot or moving parts, of course.
Make a couple loops and fasten up high. I used a handy wire loom clamp to tie to. You can add a check valve to the hose end if you choose.
That's it. Button up the shift console and you're on your way.