318 for 1965 Barracuda

You have a couple of choices; the first is to find the oem parts, and the second is Lokar; they have the cable conversion for the KD system.
The 4bbl intake bracket is now available after-market, and
as to the gas pedal,you'll probably want to convert to the cable-pull style from the later cars,and
if the intake you choose is a high-rise, that takes a different aftermarket bracket. that is adjustable for height.
Some guys here on FABO have cut the 2bbl bracket up and spliced in a piece to make it work. You'll have to search it out. It has to come forward and up, and be synchronized to your pedal system, so if you swap the floor-mounted pedal out for a suspended pedal,you'll need to do that first. The aftermarket brackets have the math worked out already

I think the Edelbrock Performer manifold is close to stock height. I would like to keep this as simple and inexpensive as possible.

Are you suggesting the Lokar solution would allow me to keep rest of the existing hardware? If so, that would be appealing.

Does this part help the cause?

You mention an after-mkt intake bracket. I have not come cross this (anyone have a link)?

I will search for threads on modifying the 2bbl bracket.

Thank you for jumping in to help. As I am certain you have ascertained, I am a novice.

David