well my m42 is getting poor milage, and the exhaust is louder then it should be. i took it to the shop and put it on the lift and sure enough there two leaks. one in the weld between the straight pipe and the muffler, and the other on the back of the muffler (looks like someone hit is with a hammer).
so after work I took it to the the local radiator & exhaust shop. they said they would put a good one on there for $70 (which isn't bad at all.)
my question is, is there something better that I can buy for my car (like performance), or am I just best off getting that replacement put on.