hello, if that estimate is for factory parts and includes labor it is very resonable. what all parts of the exhaust does it include? do you have a list?
Front pipe
Pipe
Converter
intermediate pipe
pipe
muffler
if its just the insides that are worn thats a sign of camber that is out of spec and i would agree with you mechanic that it needs new tires and an alignment.
has anything been replaced in the front end?
ASE Certified Technician
10+years experience in GM and chrysler