Check this thread out https://r.tapatalk.com/shareLink/topic?url=https://www.gm-trucks.com/forums/topic/239920-new-truck-what-are-some-cool-inexpensive-upgrades/&share_tid=239920&share_fid=33003&share_type=t&link_source=app Muffler delete is ~$75. Just cut out the muffler and weld in a pipe. Gives the exhaust a nice growl. AirRaid MIT is ~$150. This might increase fuel economy. Do the air box mod as well. Results are mixed in here. But it's cheaper and gives the same effect as a CAI. Level kit is $60. It's not hard to install yourself. Get an alignment after you're done. Paint stick mod is free. If you have a center console, organization addins are cheap and nice to do. Under seat storage is cheap. Can add a train horn for pretty cheap. If any of this sounds strange just search it in here. There's tons of write-ups. Sent from my SM-G973U using Tapatalk