Thread: Round port exhaust manifolds 1966 Bonneville??
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Old 09-28-2013, 04:29 PM
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You will need the long branch round port manifolds that fit '65-'70 B-body and '67-'69 F-body cars.

The factory 455SD manifolds only fit '68-'72 A-body and '70-'81 F-body cars.

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