Leaderboard

I haven't done it myself or anything, but given that the car was produced in the days of larger margins of error, as well as gone through around 40 years of abuse, I wouldn't have expected it to be exactly "symmetrical". I would suggest just drawing it out on the panel, step back a few feet and see how it looks. Just keep re-drawing til it looks how you want. I feel when it comes to aesthetics, what your eyes see is more important than what the tape measure sees.