I can rule out the rear springs, I replaced those a few years ago with new Mopar XHD units. But I didn't think about the other two suggestions. I will check those out, thanks.
You'd like to think that, but the Mopar XHD's have been known to sag like crazy since manufacturing moved to Mexico. The set I put on my challenger went from a little higher than stock height to lowering springs in about a year.
I'd check all the other suggestions as well, but I don't think you can rule out those springs without actually checking them.