i dont think his labor is off.
its just more of the direction on parts.
why were the OEM manifolds replaced?
unless something was seriously wrong, i doubt the manifolds were bad... but im not there.. so what do i know.
OEM:
http://cgi.ebay.com/ebaymotors/Exhau...item3a6000e08f
Long tube:
http://cgi.ebay.com/ebaymotors/OBX-H...item2eb0beedbe
shorty:
http://cgi.ebay.com/ebaymotors/Gibso...item255baaf432
i guess i dont have anything to really give you to take to the mechanic..
im not going to say he did anything wrong. If you are satisfied with his work, and everything works good for you.. then all is good.