Underhood paint colors

[ddp]

I am in the process of repairing, replacing, and cleaning up under the hood of my 71 Cheyenne (350/350). I want to paint some underhood components and was planning on using either or both of Eastwood's underhood black and/or chassis black paints.

Does anyone have any experience or opinions on which is a closer match to the original colors for the:
core support?
inner fenders?
accessory brackets?
oil fill tube?
air cleaner?

Can you even tell a difference between the two blacks?

Thanks,
Don