I've been trying to find information on this but everyone says bypass it with no further information or even a picture. I have a plug at the back of my head behind the intake that started leaking coolant when I was filling it up. Prompting me to realize there's no throttle body coolant lines and a port in the back with a stem leaking said coolant.

 

I think you posted in the wrong forum.

 

It's a 1977 f100 with a 5.0 swap. Maybe posting it in another section would be better

 

If the EGR is still functional you need to keep the coolant lines. The spacer is feed coolant from a port in the lower intake and the return line goes to the radiator in stock form. If still running EGR the spacer will crack without coolant