Reguardles of the new styling of the '02 models, the engines are built pretty much the same(the '02 will be .5 liters smaller and have a turbo charger). and there are already a good amount of aftermarket parts.(check out JC sports and SPO in the links catigorie on the top of the screen). And there are a few Turbo's that are available to. The aftermarket turbo's are most likely higher quality than the stock one that will be in the new WRX's. I say go for it, if you like the older styling. You won't have any problems with performance upgrades. Just an aftermarket Turbo alone will make a 2001 RS faster than a 2002 WRX.