Any idea what this is?

[Sixpack_Sid]

Can you please tell me what these boxes are and what they do. I am putting a 440 in my 75 duster. Cause if it’s for emissions can I just leave them unplugged.

 

[missing linc]

Top one is voltage regulator, other two might be egr timer controls or something related to emissions

 

[Mattax]

Townsend answered your question here

Does anybody know where these plug into?

I’m trying to find the wire that goes to the starter post. I don’t see plug for these plugs. Thanks for your help!

www.forabodiesonly.com

and linked to photos here

Does anybody know where these plug into?

I’m trying to find the wire that goes to the starter post. I don’t see plug for these plugs. Thanks for your help!

www.forabodiesonly.com

 

[RustyRatRod]

A factory service manual for your car would answer all of this and more. It's an invaluable resource.