new owner lifted 2000 yukon

Hello I'm new to the forum. I'm also the new owner of a 2000 Yukon SLT. I love the truck it runs and shifts great. It has the 6" CST lift on it and that's where I have questions. It needs shocks but can I use another brand besides CST? And also I noticed the passenger rear wheel sticks further out...is this because the track bar in combo with the lift? Thanks in advance for any help. I'll figure out how to post pics soon.