Mystery solved! Today, I purchased a 2007 Crossfire 6-speed Coupe with 27k and realized that the seats were not genuine Crossfire seats. (Base trim Crossfires tend not to come with 8-way power leather seats) I suspected them to be BMW units, so I drove to my local BMW store and they confirmed them as 2005 BMW E46 seats. For anyone contemplating swap, they seem to fit very well. BTW, seats AND tracks are BMW. Thanks for your response.
Will post pics if anyone is interested.