drdave81
Full Access Member
I can't seem to find why the cat back exhaust systems are different for 00-01 from 02-06 for the Denalis. I even reached out to Magnaflow why their cat back is only listed for 02-06 and they couldn't give me any better answer than "our engineers must have seen something different". Does anyone know what would be different? Magnaflow and I think it was Gibson all list 02-06 for applications for their cat backs, 00-01 is not applicable.