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Reply to "Seeking advice regarding component selection for an 8 stack E.F.I. induction"

Yes, those are spacers that the injectors plug into. These are not off-the-shelf items; they are custom made per application. In my case, they go between the manifold and the throttle bodies. I don't see why you can't have a similar system put together using a Hall Pantera manifold vs my Kelly Coffield manifold. Keep in mind, mine is a 9.5" tall block vs. your 9.2" 351C.

This is not the way my intake was intended to be used. Normally, the throttle bodies attach directly to the manifold, then a tall K&N filter mounts on top of the throttle bodies with velocity stacks inside the filter. My EFI guru (Dave at Autotrend EFI in Northern California) suggested the configuration change and had all the custom machining done. I kept telling him it would never fit below the deck lid and he kept telling me not to worry; it'll fit! It sure helps to have a full machine shop next door! 

As an aside, Autotred EFI had an orange '74 at the shop, just before my arrival, with a Hilborn system. The system had been installed by another shop (or the owner, can't remember). They fixed the installation problems and tuned it. 

I believe Hall Pantera has new manifolds in stock. They are listed on the web-site for $900. 

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