Such as
Cup holder
Radio surround bezel
Arm rests
A few others that had "wood" trim added before I bought the truck.

Any changes 97-2003 I need to know about before I call around salvage yards?

 

Everything should be interchangeable, it's just preferences. There are different cup holder styles. The radio bezels are the same. Arm rest depend on what seats you have and so forth.

 

When it comes to the door panels and trim, 97-98 is different than 99 and up. Door handles are moved up to the top, the button panel is a bit different, etc. The dash is all the same, with the exception of the cluster and you are not working on that.