Plenty of threads on this topic, please search.
Rig's setup is replacing everything from essentially the car's middle connection back. The OP is requesting delete info. Two different setups. I have done just the delete, albeit on a gen2. My youtube channel has a LOT of media, so that may give you an idea of how the $90 route sounds vs the more expensive route. Rig's does sound better (from the videos) but like many things, this is PURELy subjective. The delete might be exactly what the OP is looking for.
Any video of my LS here, is with only the two rears deleted.
Devin Barnas
Pro's of a rear muffler delete:
1) Cost effective, I paid about the same to have mine removed by a shop ($100) but that included tips too
2) Sounds aggressive. Great idle, great low throttle, and a nice tone overall. Bit raspy at WOT. I get a TON of compliments from people i would never expect too.
3) Lighter than replacing with another unit.
4) Slap it in SSt mode and slow down in any gear off throttle, never gets old. (pops and gargles all day)
Con's:
1) certain idle/revs/decels lack refinement that would otherwise be there with a proper exhaust setup.
2) You are still stuck with the stock resonators, squiggly piping, and H-pipe.
3) Highway drone around 2700-3000. Tolerable, but still a little less refined.
4) If you are a non-lse gen1, then you will most likely have to run turn downs, or cut areas in your bumper to run tips. The stock setup does not exit through the bumper on a gen1. Having the tips turn towards the ground will increase low tones, and drone - as opposed to exiting straight out the back.