273 Y-pipe?

What year is your car Hell Fish?? Maybe there is an introduction date for the "Formula S" style Y-pipe, or maybe it could be that it was changed on your car at some time. Does your car have the rear valance cutout for the rectangular resonator tip of the HP exhaust, and is your car a Formula S car, or just equipped with the HP motor??

This may give us all some clues as to what came on what when you ordered what!!!..... Geof