[Lynn]

I am guessing there are only a couple guys on this board that would know ALL those answers. I know just a few and am glad to share, but your best bet would be to invest in the 1970-74 versionof Colvin's "Chevrolet by the Numbers" book.
Also, part numbers are not always the same as <span style="font-weight: bold">casting</span> numbers, but many of these parts can only be id'd by the casting numbers, &amp; mostly, I just know the last three or four digits.

-heads 186
-intake 2110
-water pump 692
-distributor 11112116 (I think)
-coil
-4 spd carb I think 3972121 List #4555
-water pump and crank pullies
-altenator 837
-alternator bracket
-harmonic damper
-timing cover
-oil filter
-thermostate housing 660
-spark plugs R43
-spark plug leads
-radiator shroud
-fuel pump
-fan and fan spacer 772 fan, no spacer, not sure of fan clutch designation