I have the Reese Class IV Round bar hitch.
It's great but wish I had got the trunnon style bars....easier to hook up ..IMO.
I just use sway bars on interstate....Find I don't need them otherwise..It's the 80 MPH 18 wheelers that will move ya..

My rig is right at 9,000#'s
Your ride will be much better once you find the right amount of chain/bar tension..
__________________
ECM member.
2008 Outlaw Pontiac Drag Series Champion
MANDRA
Do it now fool! Life is short.
69 Grand Prix/3163lbs / IAII 535 w/ Tiger heads by Gaydosh....9.35@ 144 so far..

through mufflers. 1.26 60'.
Going back to track with pump gas engine....
My 60 Ventura retired to street/strip duty..