I have a 318 and use the reese strait line dual cam, when it is properly adjusted, you should be good. I dont get any sway. The dealer delivered mine and the set up was all wrong, it swayed and just didnt feel right. I went to the Reese website, and they have great directions on how to adjust the hitch. I followed all the measurements in their instructions, and now it is perfect. Plus that was towing with a Dodge 1500..
I ll be doing the whole process again, becasue I just bought a Dodge 2500 and it sits higher, so I will need to re adjust everything again. Should be a snap, the directions on Reese's website were great.
Also, if you do need to purchase a new setup, I fould my setup online for $500, included everything except the ball (Shank, cams, 1200LB trunion bars, brackets , and chains) It is the Strait Line 1200 Dual Cam...
2015 Dodge 2500 Big Horn 4x4 6.4 HEMI
2015 Grand Designs Reflections 323 BHS
Reese 16K Quick Slide with Factory Rail Kit Option