Q: air conditioning is not working.

my trucks electric cooling fans began running on high non stop, took in to repair shop, i was told that i had 500 psi on the high side and that my ac compressor was bad. need to replace ac compressor, orifice tube, and receiver dryer. i had the work done, but i was told it was going to cost extra because the receiver dryer was built into the condenser and they had to R&R the condenser to get to it. my question is, when i look for a orifice tube and a receiver dryer for my truck, i cant find them. is the receiver dryer the same thing as a header kit w/desiccant filter? even the ford dealer cant locate an orifice tube for my truck?

My car has 45000 miles.
My car has an automatic transmission.