LOL, I would love to hear how your experience goes.
Years ago, the Kent valley was where people use to gather to hang out and line up against each other. I'm too old now to be involved in that type of activity, I don't know if it still goes on but when I've been in the area I still see the 'No Street Racing' signs up so my guess is that it still happens down there. The area you want is the area south I-405 and north of 212th St, east of Southcenter Parkway and west of E Valley Highway, Fri & Sat nights.