Along the same lines as what Michele's saying, years ago I was at a World of Wheels show, toward the end, and I was watching this guy take down a display at the center of which was a 70 Challenger Hemi. The display had the car rotating and tilted, so you could see that every components in the suspension had been chromed. When they took it down they carefully rolled it off the turntable, and then they were winching it up on a trailer while I was talking to the owner. Conversation went like this:
Me: Nice car.
Him: Thanks. It's fast too.
Me: Maybe, but I'll bet mine's faster.
Him: Whaddya have?
Me: 73 with a 318.
Him: (laughing) What makes you think yours is faster?
Me: As far as I can tell you don't start yours.