Holy crap, Z! You must have scared off all known animals within a ten mile radius!!
I drove my 68 Camaro SB once with open headers many years ago. It was terrifying. Neighbors came out of their homes and yelled at me, dogs chased the car, girlfriend asked to be let out at the corner, etc.
'68 428 HO M3 Monster, 4-on-the-floor! Need I say more?