here are 2 pictures of factory Saleen wheels (on an 02). not sure if the stamped "Saleen" changed from the earlier years though, but i would think they did this on all saleen wheels.
yeah I am not sure if they did he stamp on all the rims either.....
Here are some pics from the inside of the rim..there are stamps on each spoke and also some p/n and speedline on the rubber piece as well.....not sure if any of this will tell us much...