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My motor came with an ISIS exh mani and i have all of thhe exh hangers and it has not cracked yet....i wrapped it up in some DEI titanium and have nismo mounts...the problem i have with the manifold are the way the runners merge at the collector..i noticed other more popular bottom mounts have what seems to be better r&d...i would use the stock manifold personally...the bottom mount tubulars put off alot of heat and the coupler going to the compressor outlet will get damaged if you dont at least wrap the manifold or route your IC piping differently...
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