WRC07-Motor movement fore and aft in the engine bay will require some clearance at the front of the airbox. I think the 5/8 inch shown will be enough.
no CAD is forthcoming.
Work continues. I noticed that the stock Ford Plastic Intake manifold has metal inserts to prevent the bolts that attach it to the head from compressing the plastic. This eventually would lead to a loose bolt. I have
ordered some inserts from McMaster-Carr.com that may work. I also ordered some threaded inserts for plastic that can be used to attach items to the manifold. The markings on the ports show the amount of offset of the Suzuki throttle bodies from port center.