I just mounted a set of Corbeau TRS seats in my 924 I got from work. Take a look at the picture below:
http://members.shaw.ca/minus/finished1.JPG
I haven't had a chance to go for a drive (its snowing bad here) but they are ALOT more supportive and you sit a little higher (you realy sink in to the origonal 924 seats) Iv sat in just about every Corbeau seat so if you are thinking of a pair I can probaly answer your questions.
I work over at
www.virtualracerx.com and can get you a 10% discount off our website prices, maybe more depending on what you order. Corbeau can drop ship to you also since your not in Canada so shipping prices would be the same no matter where you order from, the closest Corbeau distributer would ship to you. Let me know if your intrested, Mike.