Byers,
I think that your ADHD customer needs to let you have the time and room to find what he wants for a low mileage, chrome package '06 at a cheap, cheap price of $34K. Calling you everyday is just like a three year old looking in the window and whining about how Daddy won't buy him the latest toy...it must be very annoying for you.
There will be someone who becomes desperate (although I hope not!) and needs to sell at that low price. In the meantime, maybe he needs to understand that the years of enjoyment he will have by spending the right amount for the right truck is ultimately worth the additional cost of acquisition.
Let's say he pays a $3K premium over his "Cash" price of $34K...this is only $1.65 a day for the enjoyment over 5 years!!! (This is what I did myself BTW and I will be holding on to this truck forever)
Best of luck!

Scott