Its prohibited in most states for car dealers to sell emissions tampered cars like that, especially in Cali. They probably are being sold because the owner can't get them passed CARB inspections.
The 83 has an illegal and crappy aftermarket carb swap along with an even crappier foam air cleaner. Its a fire waiting to happen.
The 85 has less clear pictures of the engine. However, it has a weird alternator setup with a V belt. Stock MCSSs used a ribbed belt for the alternator so something hinky there. I can at least see the AIR system has been removed and a crappy hot air K&N aircleaner installed.