Hello All, Below is a diagram explaining what I've found to possibly be the best kept secret involving Fox Mustang Interiors. Basically, the diagram shows that your stock low back and stock high back seats are easily upgraded. Some upgrades simply involve new upholstery, some involve new foam buns and new upholstery over top of old frames. Either way, this diagram will go to show just how versatile your stock Fox frames can be. For instance, all of you guys with the standard low back LX seats can easily upgrade your seats to be a 90's Sport GT bucket by simply changing your foam and your upholstery! Check it out and let me know if you have any questions! Thanks, Waylon Krumrie Sales Manager TMI Products Inc.