I guess my exhaust manifold(s) are cracked, because there is a god awful sound from under the hood under acceleration, but goes away once warmed up.
So since it's cheaper to buy headers, JBA shorty's, versus paying to replace OEM manifolds (I'm over the 80K warranty on these...by about 3k miles

)
My ? is what should I expect to pay for installation from a shop? I'm not going to attempt it myself, it would be very ugly.
thanks for any input.