Quote:
Originally Posted by Cloudsurfer
Given your mileage, I wouldn't even dream of only replacing one side header/ cat.
Replace both cats and at least both pre-cat O2 sensors.
As to the bolts, while I have yet to have one shear off in a head, def take your time and use a quality penetrating oil like PB Blaster.
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All O2 sensors were replaced not too long ago.
Spending $4000 to replace both manifolds on a car that is worth not much more than that on trade-in is a little hard for me to justify. I'd rather spread the pain out over time, maybe replace the other side in four to six months. If I lived in another state no problem, there are many choices on after market catalytic converters at a fraction of the cost.