Hey Anthony! The difference between the Curt # C59236 and # 56062 is the installation process. The # C59236 is a universal wiring harness that will require splicing. The # 56062 is a custom wiring harness that uses T-connectors for a plug and play installation. Since this will save some money and make the installation easier I recommend the custom wiring harness for your 2008 Scion xB. view full answer...