It does sound kinda odd that you'd have to add 3"??!!!! That's a lot. Wonder if they gave you a wrong flowtube or somethin"?
Guy came over to look at my truck for sale tonite and he saw the 85 Notch in the garage and then the 88 GT I just bought out in the driveway. He asked if the 88 was for sale since I already had another in the garage - said nope I just got it. But I did crank up the 88 and listened to the MACs for a minute. He asked if I had big headers and took the cats off and I said nope - still stock shorties and 4 cat H-pipe. He thought it was pretty loud for the rest of the car being 100% stock. I still have to take the air silencer out yet! LOL!
Guy came over to look at my truck for sale tonite and he saw the 85 Notch in the garage and then the 88 GT I just bought out in the driveway. He asked if the 88 was for sale since I already had another in the garage - said nope I just got it. But I did crank up the 88 and listened to the MACs for a minute. He asked if I had big headers and took the cats off and I said nope - still stock shorties and 4 cat H-pipe. He thought it was pretty loud for the rest of the car being 100% stock. I still have to take the air silencer out yet! LOL!