I missed the 23mm offset part not working on a T-3, sorry. I got my wheels from Wheel Enhancment, the where on a clearance sale for $75ea 16x6 with a 52mm offset. The Porsche guys normaly go up in width and the are left with too many 6 inch wide wheels, they were not reconditioned but where very clean used wheels. E-mail them and see if you can work a deal, maybe a 944 brake convertion/Porsche wheel convertion story for Trends would score you a great deal or trade for some exposure in the story.
