Help! Fuel tank system setup 65 Barracuda 273

Hey guys! I’m hoping for some guidance and or direction, I’m thinking pictures might be very helpful for a novice like myself, in what parts I would need to setup for our refreshed fuel system setup, specifically related to the tank, filler neck and which grommets, gaskets and or other related components I might need for a safe and drivable setup.

when I got the car, pretty much everything in this category that was once rubber had long since rotted or been tampered with so I don’t even know what I’m missing or looking for, if that’s fair.

As of right now I’m ordering a new fuel tank, spectra, and a fuel sending unit… (we have the original filler neck)

What o-rings, grommets or other pieces do I need to find and order related to this part of the build?

We plan on using a mechanical fuel pump, if that makes any difference.

1965 Barracuda 273/V8 w/904 auto, 7-1/4 diff, 10” drums, any other information necessary?

Thanks guys and happy wrenching!