Route 66 - Bike Hire??

I'm going to the states in about 5 or 6 weeks looking to hire a Harley and do a bit of Route 66 with the missus for a day or so.
Just so I can say I did it lol

Any recommendations for bike hire?? Tour group ride or the like??
Anyone been there done that :)

TIA

Route 66 - Bike Hire??