If you are speaking of the rubber pads that are just forward of the rear wheel wells and just behind the front wheel wells, then you are speaking of the four jack point rubber guards/anchor points. These are the points at which you SHOULD place any kind of jack or lifting device. The factory scissor jack from the car fits right in these. Always make sure to jack this car up from these points and not just an arbitrary place on the underbody.

I'm sure they can be easily replaced. Also, double check all under body damage and get any raw metal treated and covered up for the long haul or rust will forever plague your car.

Good luck! Cheers!