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  1. O

    Conversion Exhaust Manifolds

    Thanks for the replies and I'll post how they fit when I get them.
  2. O

    Conversion Exhaust Manifolds

    Does any know if C6 Corvette exhaust manifold part # 12603760 & 12603758 will fit on a 1999 LM7 5.3 Vortec motor. Hoping they will mount to the mount, then fit in the CJ8 rail and miss the Novak motor mounts?
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