See this auction for a drive shaft. The seller answers a question and posts the answer in the auction (bold by me):
Q: is it steel driveshaft or factory aluminum?
A:
metal
Idiot does not realize that steel and aluminum are BOTH metals. Nice answer that is of no help at all.
Yep, thats what you find on e-bay.
http://cgi.ebay.com/ebaymotors/00-01...Q5fAccessories