So I FINALLY finished with my AST delete haha. I tried (and massively failed) to remove the AST nipple on the thermostat housing by heating up the neck with my MAP gas torch and then using my vise to pull it out....um, no. That did not work. It's simply pressed in too tight.
On to Plan B (or what I call, "what I should have originally done"). I used my dremel with a cutting wheel to cut the nipple off flush with the housing. I then used my stepped bit to drill out the remaining part of the nipple still pressed in the housings. This was kind of a mistake, tho, because the stepped bit opened the hole up too quickly. I forgot the thermostat housing is aluminum so the titanium bit would drill through it pretty quickly.
Still, the rest of the nipple came out so then I used a 7/16-14 tap to put some threads in it:


I originally wanted a flush allen head set screw but my local Ace hardware didn't have a 7/16-14 set screw of course...I think biggest they had was 1/2-14. So I settled for a 7/16-14 button head allen. I then applied a generous amount of liquid-proof gasket sealant:

And torqued it home:

I could have left it like this, but I thought that big allen head cap on it looks pretty stupid, so I again busted out the dremel with the high speed cutting wheel and cut the head off of the cap bolt:

I sanded it down a little more so now it's all ready for paint. Overall I'm pretty happy with how it turned out, and IMO it looks better than a hose with a bolt in it or a vacuum cap plug solution.
While I was in the garage I took the opprotunity to tap my primary fuel rail with 1/4-18 NTP threads so I can install a -6AN adapter fitting in both ends for my braided SS AN hose fuel system:



Tapped both ends and blew out the rail with compressed air. Primary rail is now done and ready for paint as well.
In less exciting news (not that tapping some random parts is exciting tho haha) I needed another fuel pump "sock" or strainer (whatever it's called) for my dual pump setup so I went to AutoZone to get one. They didn't have any in stock at that store but I could drive 30 minutes to get one...ok, but it was $30 bucks and I needed two of them so I'd have to drive to two separate stores because each store only had 1 in stock WTF? Plus, $30 for a little filter? I looked it up and Summit Racing had the same exact part for $9.99 plus $4 ship so yeah I went that route.
This is what I'm talking about:

Also ordered a pass-thru electrical bulkhead connector to get power into the dual pump in the tank and bypass the OEM POS 16-gauge cat-hair wiring:

So once those parts get in from Summit I can drop in the fuel pump assemble and that's done!