Offy intake to 4100 carb adapter?

You can try Offenhauser. I think they are having a contest with Clifford though. A couple of years ago Clifford was as good as dead and Offenhauser was riding high. Now it seems they have switched places. I wish the sons would buckle down and run the companies as well as the fathers did. Clifford has a plate available that looks like it should work. If you want to give them a try http://www.cliffordperformance.net Aussie Speed also uses the same type of plate on their manifolds but they look a little off to me. See for yourself here http://www.aussiespeedshop.com/product-category/carb-spacers-adapters-marine-wedges/ Hope this helps...