The "best carpet" is subjective...IMHO ACC carpet is your only choice, I personally recommend having the carpet done in high cut pile, if non original is of no concern, ACC can do this as well as any custom color or mat'l you may have in mind....now if the original "grand-ma" 80/20 loop style is your only choice, then Dave Walden at ECS is your only choice (ACC supply's his carpets)
As far as seat belts, contact Moparts member Bill Edwards at
beewagon69@yahoo.com you'll get a better price, and a correct OEM style product
Mike
