Clifford still has the adapters I believe. I bought 2 of them for my manifold a few years back. The Offy and Clifford are indeed made for the small base Carter WCFB and the Rochester 4GC (Holley teapot too). Two of those would be cool. Funny my Cifford is perfectly flat........Good Luck

216.158 MPH 12-Port 302 GMC on 70% 171.0 MPH 302 stock head on gasoline 7 years later