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    replacing exhaust

    Im replacing the exhaust on my 01 sport at 60.000.Has the 4.0 V-6 HO. everythig is rusted bad on the exhaust. should the cat be replaced to , any prob. with these. its got 2 small cats with a ox sensor between them. also have the error code running lean both cyln. vacum hose seem to be ok. would...
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