Well, I was very busy today, but I did try to take those pics for you. I took a number of them figuring I would post the best one, but when I got back home here and looked at them, none of them turned out. Guess I need to read the manual for doing close up pics with my new digital camera....

But did you understand what I was trying to describe? If you look at the manifold, where one of the screws that holds it to the engine goes, there is a very thin area between where that screw goes and the throat of the manifold for sealing. It is barely enough sealing area in that one spot for a small bore carb. When you put a larger bore carb on it, it becomes a problem. So I grind the head of that screw down a good bit smaller. Then I insert that screw in it's hole, and put a nut on it to hold it there. Then I find a piece of plastic, like a straw or something, and fit it over the ground down screw head. I then put tape from the straw to the manifold on both sides, forming a dam. I then fill this area with JB Weld. I also fill the other cavities and the pulse hole with JB Weld. When it dries, you can remove your dam, and sand the manifold sealing surfaces flat. You can then grind the throat of the manifold out with a Dremel tool and a small sanding drum to fit the throat size of your carb. I've done it quite a few times and it works well. Just remember that you then have to rig an external pulse line to the carb for the fuel pump to work.

Sorry about no pic to help explain,
AV8TOR