i ran 2" on my CJ5 with no issues on a trail rig.
i also ran 2" on my Dodge dullie cummins tow rig for a short time with no issue.
buy a good brand, and check them frequently for tightness.... and you wont have any issues.
I just had a customer call me tonight and ask about my recommendations for spacers... i told them id be cheaper to do it right with steelies from summit...