I am trying to get a good drawing from that post, but some of the measurements don't add up.

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-MattMan
LEANED & MEAN

I'd check the fusible links, and then the bulkhead connector and then work my way inside from there.
Possibly , but even if the fuel line bled off, the carb does not know that. The bowl should still be full unless the inlet needle/Seat are leaking the fuel out of the carb itself. I know Dan recommended a premium needle/seat kit from somewhere, but I don't remember where? Perhaps https://www.daytonaparts.com/ but I'm not sure.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

That's not an understanding, it's a guess—not a sound one, 'cuz that's not how this works. Find and fix the actual problem, then there won't be a need to write storylines for new ones.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Don't know what you're trying to see in which post (I'm not finding your referent) but here is a dimensional drawing of the late-'70s/early-'80s factory item (and more info here). As you can see, it has pass-thru cutouts for the throttle cable and kickdown linkage, access for the middle manifold nut, etc. Originally made of 1/16" pressed asbestos; you'd want to make it out of a modern heat-shielding gasket material—just do asbestos you can.

As for carb spacers: not a good idea to go thicker than the thickest 5/16" factory item. Thicker than that and it'll screw up your throttle linkage—adjustable if you have a cable-type throttle linkage, but not if you have a rotating-rod type—and it'll screw up your choke (can sorta fix by custom-making a longer choke pushrod) and it'll screw up your automatic transmission kickdown linkage (maybe fixable partway or all the way if you're lucky, but often it's not) and in extreme cases it'll make your air cleaner hit your hood.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Thanks Dan. That is the drawing I was referring to. I was getting a drawing made up from that for 'production' but some of the measurements don't add up. I may just have to make up a template for myself based on the outer dimensions from that drawing.

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-MattMan
LEANED & MEAN