Mopar Alley is a pretty big group of guys, i'm pretty sure they put on the Ohlone College Mopar show every year. I could be wrong, but I'll never admit it.
Right -- Mopar Alley does the Fremont show. They are the biggest Bay Area club, mostly South Bay based. I've been going to that show for years. I just joined the club to stay on top of the other activities.
The Xmas party is for members & families, really -- it's not a car show at all.
Arf Avenue is off Industrial, just south of Tennyson (in Hayward).