The rectangular plastic cup, is that the for fuel overflow?  If so, mine is missing the drip line.  Do I need heat-resistant tubing or will just fuel-resistant tubing suffice?

...and where the heck do I route it?

Fuel resistant hose would be the best for longevity. My hose joins up with the radiator over flow hose and runs along side it and exits at the same place.
Regards Martin.

Route it behind the right foot peg plate. I don't have an accumulator cup so I have two hoses routed there.

zaubertuba wrote:The rectangular plastic cup, is that the for fuel overflow?

It also is for vapor evacuation and collects water that drains into it from around the fuel tank cap.