Thanks, Ricardo. I've stopped auto crossing competitely and sold my Camaro. I have my 57 as a hot rod and fun cruiser. It has decent power, but it's really more about style than actual speed. So at this point I view the SC as just a really fun street car, and I don't want to do anything to make it worse in that role. It was an ideal car for the last Epic Drive event. So as you mention, I have no plans to remove stuff like sound deadener or AC. It would save weight, but it would make the car worse.
Back in the 60s, Ford had its "R-code" muscle cars: the most powerful engine available in the lightest-weight version of that platform. Like the Thunderbolt--a 427 in a two-door post Fairlane. That's kind of how I think of my SC, as if Ford had made an R-code Thunderbird. At some point, I want to get my 95 LX running again as something more like the S-code Fairlane (which had a mild 390 and more options/luxuries. So the plan for the LX is an Explorer 4.6 swap, but posher and softer around the edges than the SC. Leather, fold-down rear seats, all the factory options I can throw at it (and some you couldn't, like factory foglights).