I decided not to go with the $600. option on having OEM mufflers installed, but rather the $150. option, which has made a world of difference! BOTH of the mufflers toward the back were in terrible shape. When idling, the car was not that loud, but when driving, especially through parking lots, it was rather embarrasing.

The mufflers on there were the original units. They have lasted 20 years.
The mufflers have a good warranty and I could not see paying for $600. mufflers on a 20 year old car, when the $150. units work perfectly. The car is extremely quiet now. That is something my dad would do. He went and spent $700. for an exhaust system for his 88' Nissan truck, then $400 for the ones for his 69' Camaro.
I am slowly getting this car back in shape to where it needs to be. Now, on the list is new plugs, new tranny fluid/filter and brake pads.