If you've never done the cruise, Friday you can actually cruise. Saturday, Woodward is such a parking lot; last year on Saturday my bud w/ a 67 Riviera averaged one mile per hour. People actually start cruising today, with the number gradually increasing to Saturday.
I'll keep an eye out for your car. 13 and Woodward is the unofficial epicenter with displays from Chrysler and GM, as well as various vendors.