This may be the coolest item if you have a 986 S.
Forza 3, which came out 2009 for the Xbox only, includes a bunch of Porsches. They decided to include a 2003 Boxster S as one of the cars. You can race it, paint it, design decals, swap rims and upgrade parts. You can keep upgrading until you are racing Lambos. You can even do engine swaps if you are worried about your IMS.