66 327 original parts decode

[Calichevyv8]

Can someone help determine if these parts are original and what the numbers on them decode to? They are off my 66 327, TH400, A/C. I'd like to get whatever is original rebuilt so I can get them back on the truck.

Alternator - seems to be original AC Delco
Master cylinder and booster - can't find numbers on the booster
Blue streak coil - looks kind of newer but not sure
Starter - need to clean up still, will there be numbers located on it?
Radiator - Harrison, trans cooler busted inside so the shop that boiled it killed the 2 trans lines. U F R letters on top tank B M on bottom tank. Tag looks to say "DRC".