Diamond Park by Phillippe DiederichCall Number: Teen Die
"When Flaco, Tiny, Magaña, and Susi ride the bus from their Houston neighborhood to Diamond Park to buy a 1959 Chevy Impala from Magaña's godfather, something goes very wrong, and Susi ends up arrested for murder. Convinced that the real killer is a drug trafficker called Anaconda, Flaco and Magaña head to Mexico hunting for him to clear Susi's name--but in the process of kidnapping Anaconda Flaco discovers how little he understands about what really happened in Diamond Park." (description from catalog