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If it's above the throttle plates, it shouldn't have vacuum at idle, so it could be used as a distributor advance port, rather than EGR.
That's not a ported nipple by the passenger side idle mix screw?
That's why I mentioned helping low end torque a bit, and the OP said he was on a budget; which, to me, throws the OD idea out the window.
Sounds like he'd only be out an intake gasket set and modifying the kickdown (or getting a cable kit from Bouchillon) to try?
I'd put a...
Edelbrock's are 2 step. Would need to change jets and the covers over to the flat type (stock are domed) to use.
The Carb Shop In Missouri has 3...