great site. we 964 owners need to do this. i've thought of changing the interior of my black '90 C4 cab from tan to black as well. i'd be curious as to how much you had to invest in the change. anyway, if you don't have one, here's a 964 link that has good info. i'll try to post more later. i'm sick today, so my energy level ain't all there. great site. good job.
http://www.porsche964.co.uk/