You are going to want replacements for the manifold studs and nuts.
The studs on the manifolds that go to the silencer might break. Be prepared to replace with bolts and nuts (copper won't corrode so quickly).
You might have to lower the entire rear exhaust from muffler to silencer to get clearance to get the manifolds out from below. Just ease the silencer down but leave the mufflers in place. You sort of have to anyway--the rear bumper is in the way.
I wiggled both manifolds out from below this way on an LHD car not long ago. You may need to get some manifold studs out from above and some from below.
Wear gloves, or your hands will be ground beef.
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2001 E53 3.0 5pd
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