Hello, Just learned of your new manifold. Great idea, one of those "Why didn't I think of that?".  I saw or read an article that someone was fabricating a manifold that would mate the small Cadillac V8 composite fuel injection manifold to a SBC.  That was my first thought with your manifold and a 4.6 or 5.4 adaptation. The FE may be to wide or narrow, I'm not positive there. Look forward to future posts on your progress. Thanks.