I haven't seen this posted here yet. TA performance has 9-bolt girdle covers available for our cars. They are almost a year behind TA's projected availability date, but they are taking orders and shipping them now. The price is $159 for the cover and about $20 for the stud kit. I have ordered one and I'll post again after I get it.
http://thirdgen.org/techbb2/showthread.php?threadid=214338
http://Www.taperformance.com/rearend.htm
http://thirdgen.org/techbb2/showthread.php?threadid=214338
http://Www.taperformance.com/rearend.htm