Racing Beat Exhaust Clip
 

Here is my 88 with 164k miles idling and then a quick blip to 4.5k. I'd say for how old it is it's not bad. This is a racing beat cat back with a bomez superflow. I have all my emissions in tact.
http://www.youtube.com/watch?v=JVXzIFzovBk

all i gotta say is WOW 164k miles, she's a trooper...