Honestly, I'd probably find a nice outdoor rifle range and go early on a weekday morning when nobody is around. No need to say anything to anyone about your experimental parts.

The Challenger looks great. The satisfaction that comes from having done the work oneself is huge. Seems like just yesterday I'd see an American muscle car being worked on in every other driveway. Of course, we didn't know they were classics then - which sort of makes me wonder what automotive investment opportunities are passing me by right now…

Aluminum casting is definitely do-able at home. Have you checked out our Forging and Casting category for ideas?

Ken