Good morning -
The 327 in my Chevelle uses a Bills Hot rod bracket for the power steering pump and a Bubba modified bracket for the alternator
The 327 heads here are pre-69 and have no attachment holes in the front section. Hard to see but the PS pump is driven of the front pulley on the crank.
The PS pump is standard GM but I am using a steering gear box from a 97 Jeep Grand Cherokee (Delphi/Saginaw)
The alternator attaches to the front bolt on the exhaust manifold and the Black support which is 1/4" X 2" steel flat bar forged into shape as a brace.
I see in your post you have newer style heads and can use a later year set-up using the heads for attachment.
Crank pulleys are the driving pulley and should be used if possible
