Yes I agree as it would be a heck of a junkyard repair! I just threw the idea around for fun as I have not done it.

A 3/4-16 jam nut will be harder to find. The base plate is already thin. Just a wee bit like a flying saucer if left whole.

Nothing a hand hacksaw and a sweating brow could not fix though! Hey, it's recycling, even the sweat!

Oh, I caught your post on the ported...ports. You are absolutely right back as far as where the LH systems began.

They used different pressure regulators than K-jet systems. I was remembering all my cars for those tiny holes. They were used for vacuum advance for the distributors 78 to 88, air bleed of for basic idle or maybe (?) even an air conditioning control valve. Over the years those holes around that throttle plate have gone to many things.
I like to think that they used that plate for the "whistle" effect at low engine (air) speeds.

My memory does not refresh as well as the F5 button. A glitch in my software! (:)
Thanks for the reminding me! (:(

Phil