Hi all. I am new here. Just bought a 07 Suburban c 1500 LTZ and have come across something that makes me go Hmmmm. I have a three Rivers Aluminum Driveshaft that looks much newer than what it is hooked up to. Were/are these standard (I doubt it) and if not, why would someone need to change to this (especially at only 18k miles) What does anyone know about Three Rivers Driveshafts? Second question: When I purchased the vehicle there was verbage to the effect "No ARB on Frame." Only ARB reference I can find is for 4x4 air lockers. This is a 2wd luxury car that was lowered (professionally) for better handling. Any thoughts would be appreciated. Thanks.