I have a 500 CFM Edelbrock sitting on top of mine. I had to use a 1" spacer to prevent inteference of the carb throttle with the runner. See pictures.
You still can't use your stock linkage. Not unless you can somehow weld an adapter onto the Offy intake. Just get a Lokar-type throttle cable and thread it underneath the intake and run it back up over the top. You'll have to make your own cable linkage support piece. I'm not using the stock linkage but I will keep my stock accelerator arm. Later!
-magic mike-
