It won't make THAT much difference. I forgot to reconnect my sway bar after off-roading one weekend. I was doing 60+, down somewhat curvey roads. I kept wondering to myself why there was more than usual body lean, but nothing so much as to scare me. Wasn't until I got home and later crawled under the front end to look at something else that I realized what I had done.
Just keep in mind that it will lean more and seem to hunt around the road more. But doing 55+ is not a problem.
2008 2-dr Rubicon, auto,
RK 2.5" Max Travel, Fox 2.0 shocks, 37" Nittos, 5.38's, RR skids, Warn VR8000-S.
RIPP Gen 2 Stg 2 Supercharger.
"Don't give up 5 minutes before the miracle occurs."