How did the car run before you pulled the exhaust? If I remember the stock pipes right, they are fairly long and bendy, so the flashlight may not be a good test. Don't know never gave it much thought. I just ripped mine out and put in a MAC prochamber.
If they were plugged the motor would barely have run, if at all. Were you having any problems with the tune, running rich or really hot?
I agree with 93 teal terror. I was told that mine had Flowmasters. I took it to a shop for a prepurchase inspection, and found out the car didn't even have mufflers! The stock 302 sounded pretty decent with just the cats though. Got a little discount and bought the car anyway.