Nope, I have base cloth seats. And I'm not so concerned with them being made specifically for the S550. I just want something I can attach to but my main concern is screwing up the seat.I've see these made for jeeps and trucks, but never for Mustangs. I think they're a great idea. I have a ton of old pouches from my chest rig that could now hold stuff for the kids when they ride in the back seat. Do you have the Recaros in your car? I doubt there are any Molle seat covers that will work with the Recaros unfortunately.
Right now, the main thing I'm looking at is an AR pistol to replace the G20 in the cargo pocket. But these have endless possibilities once you put pouches on them. First aid/trauma kits, fire extinguisher, garbage, detail spray, etc.Might depend on how much weight you attach to the Molle panel. If it's just lightweight stuff, then it should be no different than any seat cover. Hopefully it works out. Post pics if you end up doing it!!!