CJ, if you're choosing to go retro and eliminate or bypass any ewissions controls you need to choose an archetype.
No Cat, no retarded cam timing? Id suggest a 1968 MY.
Just find something that works for you.....
Then always use that when asking for parts. (here, at the store, on Rock Auto or eBay)
Bypass one, the other or both vacuum devices with a straw or piece of fuel line or something,.... anything.
You'll know right away where the leak is, when it stops.