To De-Smog or not to De-Smog...

I have a '74 Dart Custom /6. It is a California car, and the intent is to make it a daily driver. It is no longer restricted by any emissions testing, and the engine compartment is a cluttered mess.

Perhaps my searching skills are not up to par, but has anybody gone through how to properly "de-smog" a /6? I'm sure that much of the junk in the engine compartment is superfluous or even capable of robbing small amounts of power. What modifications may be made to simplify the view under the hood? I do have A/C, which I will be keeping, but holy crud- there are like, four vacuum lines just going to the air cleaner!