Small update.
Pulled the old manifold/carb and started mocking up the EFI setup.
My old setup wouldn't allow an air filter to fit under the hood. I knew the EFI setup was shorter but still had my fingers crossed about it fitting.
It looked tight when I was eyeballing it. Closed the hood and snaked my arm up into the bay to snap some pics.
It clears! Maybe 3/8" clearance but I'll take it.
Tomorrow I'll start playing with the wiring. I also need to finish planning the fuel supply and get some things on order.