If you get an rs, it is stupid to get an aftermarket sunroof put in. First of the extra stuffness in the frame will be lost and the car will be less still than the ls. Secondly the aftremarket ones leak so you will have a leaky car. If you don';t care about the ammenities, and found a good rs which has a good engine and good condition body for a reasonable price, go with it. You can have a good base to do lots of mods to.