Help with firewall patching. what all can i patch?

[nitrosport_5]

Hey guys, i am trying to get my firewall all cleaned up and rid of the unnecessary holes. I have patch all the '70 gas pedal holes since i will be using the 72 setup. I have attached numbered pictures, if anyone can tell me what numbers to keep/remove or at least what they are for, i would greatly apreciate it. Thanks in advance!

This cab is going to be a donor to replace my rusty 72

I know some of the smaller holes are for the insulation padding, but cant remember which. Are they in the same places on the 70 and 72?
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10 these look/feel "custom". have a nasty lip on the inside.
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