Stock afr?

[1966 dart wagon]

I've been having issues with my daytona and recently converted it back to stock 89 TII specs, granted it has a 2.5 and s60 turbo, but its running Robs stock cal, anyways I was wondering what the stock afr at WOT should be? Right now its going right around 12.4-12.8 at wot at a gvalve controled 8psi. But after my test run I found out my fuel rail is leaking at the afpr, so I'm heading to the junk yard now to find a new one, I know the leak is causing issues and probably messing up my afr but what should it be at? 11s, or 10s?

[turbovanman²]

You should be in the low to mid 11's, in the 10's, too rich.