As posted on B.A.T.:
I’m not privy to what, if any, modifications were made to the “Medium-Riser Intake” utilized in this installation, but if one were to want the twin-blower program to function properly, as of “out of the box” there will be issues trying to make the system function as intended.
Hint: Look up the original “Super-Snake” Cobra, note that they apparently chose to utilize the commercially available Edelbrock X-F66 intake, instead of any of the more readily and probably less expensive to acquire (that is for Shelby Automotive at the time) Ford O.E.M. manifolds, that such as is presented here.
Scott.