I just put dual exhaust with cats on my car and its really loud with a muffler. I bought two of these $15 turbo Summit mufflers and love the sound, but they aren't fitting well due to size. It'd be easy to put some long glasspacks on so I'm looking for ones that will quiet the car down a bit. It's a daily drive so I'd like to avoid cop attention as much as possible as far as a glasspack goes. So my first main question is: Will glasspacks be louder than turbo mufflers? Im probably going to get 24" summit glasspacks if it won't be too loud.

I've never heard a quite glasspack. The louvered ones that greatly restrict flow are quieter, but defeat the purpose of running duals by making your exhaust flow like it was a sigle 2.5 inch pipe. Which is what the summit ones are. Don't get them.

I'm running dual 18 inch thrush glass packs that are perforated(not louvered) and yes they are to loud. I wonder what two back to back would sound like? I may try that some day.

They are straight through with a perforated core and "glass" packing material. Loud as hell, I'm sure. My Evo with a Magnaflow can (striaght through, perforated tubing, with packing material around the tube and inside the can) is very loud...and it's only a 2.0L. Nice rumble, but behind a 350, I'm sure the cops will notice you coming 3 blocks down the road. "OK, boys, get that LIDAR ready...something's coming"

Theres a KC glasspack KC like the off road stuff. They make very mild sounding glasspack mufflers, I had the 24's on my truck very quiet nice sounding. The 24in cherry bombs they sell at most parts stores are even quieter I had one one my car sounded like a stock muffler almost.

who/what is KC? I'm not familiar with that company. Does it stand for something?