I know this subject has been beat to death, but I need some suggestions. I have an 86 K5 w/305. I want to put dual exhausts on it. I can't decide whether to go with glass packs or 2 chamber Flowmasters. I want the sound of glass packs but I want the increased performance of the Flowmasters. I live in an emissions state (VA) so I have to keep the cats. I'm going with high flow cats, but I'm afraid that they will restrict the sound of the Flowmasters. I want that nice loud rumble. Any suggestions?