Guys - don't shoot me for this size of this post. It may be my longest dissertation, yet!
Aside from the obvious showy things like bezils and handles, here are some "special" items that may be a little harder to find that I used on my '54 to try to get to the original look:
Radiator cap - no one makes the correct
AC #501 4-lb cap. I had to buy the one made in India sold by most vendors.
Pinch type radiator and heater hose clamps: The Truck Shop clamp kit #55-07011 did not pinch tightly enough to seal. I ended up using non-correct gear clamps. Brad Allen used pinch clamps on his 3/4 ton. Maybe he can tell where he bought them.
Carb insulator - no one makes a real bakelite insulator. They are all plastic, even though Chevs of the 40s claims to be bakelite. Buy an original one from a Stovebolt member.
Fuel pump: The in and out ports of a correct 1954 fuel pump are angled 20-deg to the block. I attached the top half of a glass bowl pump to the bottom of the metal-top pump that was on my truck. Looks good. Chevs of the 40s sells two good glass bowl pumps for 1954s -
Pump 1Pump 2Vac advance line: Inline Tube available direct or from Chevs of the 40s. It is a perfect fit.
Fuel line: No one makes a good fuel line to fit the 20-deg angled in/out ports of a '54 fuel pump. Suggest you bend your own to match pics in Chevy literature and Assembly Manual, especially if you use an inline fuel filter. Bend it to be parallel to the Inline Tube vac line that you bought from Chevs of the 40s. The Inline Tube fuel line from Chevs of the 40s is very close, but does not mate to the fuel pump properly.
Clips - fuel line to vac advance line: Eckler's #834030. Cheaper than some other sources such a Chevs of the 40s #599119.
Fuel filter: No one makes a correct
Durex Moraine glass bowl fuel filter that would have been used in 1954. Buy one on ebay. GM #986640.
Air cleaner decal for RPO 216D oil bath air cleaner: The Filling Station #SA-36A (closest to original look of any other suppliers)
"ThriftMaster 235" decal: None are great. Chevs of the 40s is the best I found from a supplier. I scanned one and had a vinyl decal cut at a sign shop. Much better.
Engine paint: A lot of discussion about what is "right" for 1954 engine. I used Filling Station #FS-359 (spray) & #FS-119P (pint)
Dual clip for speedo cable and wiring harness low on firewall: American Classic Tr Prts #FA-113
Clips on inner fenders for wiring harness: American Classic Tr Prts #FA-114
Metal speedo cable: (a couple of inches longer than OE) American Classic Tr Parts #SPC-2
Glove Box Lock Gasket: Classic Parts of Am #22-412
Window and vent - felt / wipes / rivets: The Truck Shop
Trim screws "#8 with #6 head" and #10 with #6 head": The Truck Shop #47-15103, #47-15102, #47-15101, #47-15106
Clutch head screws: Most of
these sources have various sizes.
Tail Light: exact reproduction of the plastic lens with correct GUIDE and Guidex numbers. Not real pleased with the plastic boot. I painted the stainless bezel black to be like the original. The Truck Shop #54-11007
Parking light lens only: Has the correct GUIDE F1A-54 markings on lens. (I bought reproductions before these were available.):
Taillight KingIf an original part is chrome plated, don't buy a replacement made from stainless. They don't look the same.
Good luck with your quest.