Hello, I'm newbie here. I got new truck 2008 Chevy Silverado ecsb Z71- 5.3L LMG, 3.73. I'm planning to get mods for CAI, Muffler, servo, Headers, etc. Right now I'm looking for CAI and Muffler. I not sure which good K&N CAI or AEM Brute Force. Hard to decide which one muffler- Magnaflow, Bassani, Borla, etc. but I'm looking for loud for idle and WOT too.