I believe that noone runs them because they aren't reliable under that ruleset. IIRC, there was a Sport Compact Car article out in 1998 that broke the car DOING THEIR TEST with a SSB prepped car. Most thought that it would be too cost intensive, especially compared to the other cars out there that are SSB legal. And in club racing, not everybody is a multimillionaire that wants to rebuild the Duratec after every track weekend.
Personally, I'd take the GSR and walk everyone else.
