Look up the measurements for a Cobra Imola-S. And compare those measurements to the photos I have of my seats installed...that's pretty much the best I can help you.
Photos -
http://www.flickr.com/photos/dhdynam...7605562102490/
Note the shoulder area is the issue with my seats...if needed I could measure to the B-Pillar and between the seats.
You might also try measuring your stock seats to compare them to the ones you're looking at.
-Dave