I use a Curt OEM Dodge Q16 non slider. This hitch weight is 178 pounds, can be removed or reinstalled in under 5 minutes. My recommendation is to go to the largest Spring/Frame manufacturer in your area and get some expert advice. Q16 is a non slider but can add roller bars if I wanted a slide. Never have had an issue backing up my 320, after 3 trips I now park it solo.
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Brent/Barb -Zoe/Whizabeth wonder dogs
Palimino Columbus 320RS
2014 Dodge Ram 2500 6.7 Diesel
Calgary, Alberta The Stampede City
"The only things in life worth keeping are the things you give away"