jmlay

I agree with Brian, they look pretty good to me. I replaced my taillight pane longer ago than I care to admit and finally getting it all back together, not recall the manufacture. Here are pictures of mine for reference. With taillights installed it will be hard to tell if there is a small gap. Making them more parallel with the taillight, viewing from the rear, is more apparent.

The tq boxes were a tight fit between the frame rail and rockers. I will look for my measurement notes tomorrow.

Any new block is going to need to be gone over and will likely need some machining.

Got ya.

What size tires and wheels?

I do not believe three is an exact placement. The pictures int he link below are very clear & should give an idea of the location. https://www.deadnutson.com/firewall-vacuum-tree-plug-kit/

J-clips on the radiator support is what I most often see. The Concours Mustang forum is a good resource.: https://www.concoursmustang.com/forum/index.php?board=66.0

After setting for 10 years with little to no use * would expect all seals & rubber to dried up. At a minimum I would disassemble, clean & inspect to see if it needs to be rebuilt. A basic rebuild kit is fairly inexpensive.: https://www.amazon.com/iFJF-Carburetor-Rebuild-Edelbrock-Gasket/dp/B07S8FHCTQ/ref=asc_df_B07S8FHCTQ/?tag=hyprod-20&linkCode=df0&hvadid=362768105905&hvpos=&hvnetw=g&hvrand=17447957952955106925&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1026836&hvtargid=pla-785655582198&psc=1&tag=&ref=&adgrpid=75266506039&hvpone=&hvptwo=&hvadid=362768105905&hvpos=&hvnetw=g&hvrand=17447957952955106925&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1026836&hvtargid=pla-785655582198

I have no experience with that harness. Sorry, can’t help with that. Looks like that yoke is sticking too far out of the transmission extension housing.

Some discussion here: https://www.vintage-mustang.com/threads/question-about-export-brace-bolt-holes.1182942/

I had similar hose but higher up. In my case they were for the trailer hitch mount.

Edge of Tomorrow

Some good reading in this post. Unfortunately it is a quite a bit of reading: https://www.vintage-mustang.com/threads/still-running-hot-will-bb-fan-fix.1212401/page-5#post-10809926

Some info that may be helpful: https://www.concoursmustang.com/forum/index.php?topic=11487.15

The door glass is not the same for all models. Coupe/convertible windshield posts are at a different angle. Thus the windshield and door glass are different.