Why are there no Vipers at Sebring?

[Go Fast For Life]

I just watched the 12 hours of Sebring. Porche/Ferrari battled for the GT2 class. There were a couple of Corvettes but no Vipers!? How come???

 

[Chuck 98 RT/10]

$$$$$$$$$$$$$$

 

[Andrew/USPWR]

There was a GTS running for a few years. It was painted steel gray but I don't think it was a 2000.
There was also Ford GT team there saying their hoping to race the new FGT at Petite Lemans this year.