I'm about where you are looking to be. Ram 3500 SRW with payload of 4018#. From memory I think I weighed with a full tank of water and lightly loaded about 3400#. I will probably end up 3500-3700. I've only used it twice: bringing it home from Maryland and a fishing trip to Oklahoma. (New grandbaby stalled our travelling.) I had no issues and nothing scary. But it did rock a bit getting into and out of sloped driveways and camp sites. I didn't have much if any problem with wind or 18 wheelers passing. I did study and read as much as possible about mods to the rear suspension. Lots of help on this forum by the way. I decided to get a Hellwig BigWig. Actually arrives tomorrow from Amazon. I did discover the Roadmaster sway bar won't fit my Ram with factory 5th wheel prep.
