So I am buying new carpet and a member directed me to "stockinterior.com". They have a number of different colors and I have no clue which one would match the stock tan interior. I have a 1988 eddie bauer and I think all the eddie bauers came with the same tan carpet. Any help would be appreciated

 

The same color as your curtains?, we hope... And I really don't want to find out

But really, see if they have a color palette you can compare against the carpeting in your truck, look under the rear seats for a nice piece of almost new carpet to compare the colors (I'm not saying you should cut anything, just that the carpet will be in much better shape there).