On the cheap freindly comp?

Rumble, and others, please forgive me if I'm being thick headed. (I'm good at that.) :joker: From what I see developing, this would be a good time. BS, grille, etc.
It's been said here that it's just for fun and no racing. If this is so, why do the cars have to be low-buck? Sounds like a test and tune day, with all participants sharing knowledge, having fun and maybe a grudge match or two.
If a guy shows with a mega dollar car (certainly not me!), what's it matter?