those kits are actually good kits... not exactly like stock, but very, very close. They REPLACE the cloth on the seats... and it takes quite a bit to install them... theres hundreds of metal "hog rings" that hold all the covers in place... all the "creaces" so-to-speak... where the covers are "pulled" into the seat... use these small round metal rings to hold the covers in place. If you were to just slip the covers on, and secure the edges, they'd look like those cheap, generic seat covers.

Instalation isnt too hard... just very time consuming! You can just buy the kit yourself... but you'll also need to get some hog rings from an upholstery place, some padding for the center arm rest and the door panel pieces... plus some really strong spray adhesive for the door panel pieces.