Don't mean "hacking" in a negative way.. Just a general phrase.. I've seen by your pics {and I know better} that you've drilled the spot welds. That's the only way to do it correctly..I am going to find a Charger and take some measurements of the body panels front to back and side to side for comparison of the Challenger. In the meantime, I'll check online for dimensional measurements {body shop} comparisons between the 2, for shiggels and gits..Do you mind if I ask,inquire,look for advisement,etc etc, in the future with certain aspects of the build if I go this direction?