It wouldn't expand up much anyway, I measured mine at 5# and filled them right up to 100# for the hell of it one day and the lift was right around 1/2".

You'll be fine.

 

This thing is awesome. Just got it in the mail today. It's bigger than I thought it was. Seems to be well built, especially for the price. I was expecting just to keep it installed all the time but I've changed my mind. For one, this would be way too easy for someone to steal. And secondly, it looks like it blocks the drivers side license plate light so I don't want any problems with the 5-0

Here's some pics of it.

 

here is a pic of me pulling my car trailer with about 60 pounds in the bags


here is a pic of the truck right after i installed the bags going on a road trip


i like it because the truck sits nice and level when going down the road