1. If your converter broke into pieces, I'd be looking at how the exhaust system is hung under the chassis, how the vehicle is used (banging converter off of rocks or parking barriers) and whether the engine tune is correct.
2. Just because a converter hasn't broken into pieces or rusted-through, does not mean it's working or is "good".
3. There may be fifty different companies SELLING converters, but I bet there's only four or five MAKING converters. Re-boxing in the auto parts industry is epidemic.
4. Dorman exhaust manifolds are, in general, piss-poor. Allow extra time and money to have the cylinder-head to manifold gasket flange planed for straightness. And don't get me started on how some of them are made in Viet Nam while others are made in China. OTOH, for some applications they're the only choice as the OEM manifolds are either discontinued, or just as bad as the Dormans.
2. Just because a converter hasn't broken into pieces or rusted-through, does not mean it's working or is "good".
3. There may be fifty different companies SELLING converters, but I bet there's only four or five MAKING converters. Re-boxing in the auto parts industry is epidemic.
4. Dorman exhaust manifolds are, in general, piss-poor. Allow extra time and money to have the cylinder-head to manifold gasket flange planed for straightness. And don't get me started on how some of them are made in Viet Nam while others are made in China. OTOH, for some applications they're the only choice as the OEM manifolds are either discontinued, or just as bad as the Dormans.