I have a 98 GTP GTX and Daytona Pace Car package car. I bought it from the original owner who bought it new. It had paperwork that it was send to SLP for the GTX conversion. He told me that any GP could have gone to SLP for the GTX package, not just red black or white. But SLP sold some cars to dealers already done in only red, black, or white, or so I have been told.