I am looking for the bed rail caps and tailgate cap for my 99 F250SD. I am thinking plastics would be just fine as I am just trying to replace a missing piece and some warpped pieces. The idea of going metal doesnt seem appealing. Where is the best place to get this from?

I looked at stealership and they want 80 bucks a side and 40 for the tailgate. The only advantage I can see with these is that they would snap into place and not use tape like other brands.

Suggestions?