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i bought a 4-1 dc ceramic header for my car and it didn't come with anything except the o2 sensor extension wire. however, my friend bought a dc 4-2-1 header for his 90 integ. ls, and his came with a new exhaust donut. the exhaust manifold gasket, that mates to the head, might be reusable, if in doubt, just go get another one.
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