The 2003 "S" we have has a cheap aftermarket manual petcock that the PO installed. The flow drain is on the right side so the gas line goes INto the engine, which seems like a bad idea with heat and the line kinks a bit. I would imagine that one that flows downward would be the best choice. I am not paying for a Pingel! Can anyone suggest a decent, affordable petcock? Is there any point in trying to install a vacuum style like the OEM? Thanks again. I've been asking alot of questions lately but I'm trying to get this bike ready for my son and I'm new to DRZs.