91 sonoma looking for a new tailgate

I have a 91 sonoma with a badly rusted tailgate. I would like to replace it with a new one. I want to add a roll pan and want a flat tailgate like the newer sonomas. My question is are there any aftermarket tailgates out there or do I need to buy a new stock tailgate and cover it with a skin? Or does any other model tailgate fit the 91's?