I saw a DX with custom headlight and exhaust by the intersection of Corral Hollow and Valpico at 6:15 PM on Friday. The bike sounded awesome.
Don't remember the helmet or the backpack, I was going the opposite direction in my car. You live in Tracy?Full face helmet, big black backpack?
If so, that was me. I thought I hit the stop sign little later than that, but it could have been me.
No custom headlight though.