951 Headers question.
 

Did the 951 headers come wrapped with some heat or accuoustic material? because if they did i think mine is gone and thats why my heat shields rattle so much.

Nope... but either you have a crack in the headers or the heat shield weld points have come loose.... causing the rattle...

No theydidnt. You probably have (as noted above) a cracked header or blown exhaust gasket, I would look towards the heat shields last to be honest. Feel around the exhaust for air (not when the car has been running for 30 mins!) and if it doesnt have the updated bellows style header I would look at #2/3 IIRC.

951 Header Information
 

If you want more details on the 951 headers, see my FAQ:

http://www.narma.com/porsche_951_exhaust_header_faq.htm