65 Chevy Impala SS open headers irritates my neighbor

Here's my original high school car, numbers matching (327 c.u.i.) bought in 1972. Decided to open the headers and cruise around my subdivision a little, but end up ticking off my neighbor. I didn't even drive by his house - he lives up the block the opposite direction. When he heads to the back of my car to take a pic of my license plate, I realize this could turn against me. Funny thing is, he doesn't actually recognize me until I get out of the car - then we "share the love".