There are a few options your can do. I haven't done any in my msp but have done some in my old mr2 i used to own. You can either order leather seat kits through like katzkin which make nice covers and aren't very difficult to install just time consuming for someone who hasn't removed seat covers before. If you want to re-upholster yourself however, first and foremost you need the correct type of sewing machine such as industrial strength so you can actually sew the material you will be wanting. Also gonna need some hog ring plyers, basic hand tools, and some hog rings. You might get lucky and be able to trace the paterns of the old material if not worn by cutting the connecting thread of each piece or you will have to make a design yourself. My best recommendation is if you feel confident go for it. Nothing like a learing experience. But might want to go to some upholstery shops and so if they will give you some free waste material to practice on before you buy the good stuff and go all out. If you have any more question PM since i know how to do this