Most of those old cars had a breather on the manifold fill tube and a puke /vent tube , which just vented and puked
oil to the street. You would not be allowed on a track like that. So they added the puke tank, with " ingenious" drain back capability. This was also the cause of all the
oil misting in the engine compartment............Enter the..... pcv.....no piling, no mister up engine bay....
Hey , if I was going to do it properly with the. Webers, I would drill, tap and put a small barb into each runner, join them at a small junction, manifold, and then to a pcv. You could also run a remote breather or put a breather cap on your puke tank, for looks, and hide the outlet at the rear of the manifold. The breather tube will be under vacuum , so no need for a clamp, just pull it off to fill from the rear.....