Being a 1994 your going to have to go to the dealer parts department or the Salvage Yard for the best price for the part you need. Other placed that can help you also would be a Auto Motive body shop and they can order the part for you.
LMC truck has trim work and other things you may need. go to LMC.com and look there or order a catalog for your 94 its free for the catalog. So you dont have to pay dealer prices