IMO, what you have are banjos that have had the original hoses cut off of them. They are just hose barbs underneath. Of course it would work to just clamp some rubber fuel line onto the barbs (which is what my car had when it came to me), but AFAIK the factory always supplied the hose already fastened to the banjos with crimp sleeves (very similar to what Don shows).
So yes, to be most nearly correct, buy the assembly from Moss or TRF and keep the banjos you have as spares.
At the moment, my 56 is wearing the carbs off of the 59 with the later "push-on" fittings. Someday, if I get bored, I might rebush the originals and put them back. But most likely I'll follow my usual routine of driving it until it breaks, then fixing it and driving some more :laugh:
Took a test drive today, seems like the rear end operation was a success. Next weekend will be the real test, we're planning to drive some 800 miles (to Yosemite National Park) with some other crazies from the local TR club.