I have several different hitches depending on vehicles. My truck requires an 8 inch drop as it's a pretty heft truck. That ones has never needed an equalizer hitch. I do have one and it will work as a regular hitch, albeit a really heavy one, if you don't need to hook up the equalizer bars. I used to tow a car trailer with an '88 S-10 pickup and used the equalizer bars. The function of the equalizer is to spread the weight from the back to the front of the vehicle.
Keep in mind that maximum weights for towing are done on paper and when a prototype is built, everything is balanced by experienced people who distribute the weight properly. Load your trailer with the weight too much in front or back, and your towing experience will be....interesting.
I was heading down the road once and a kid was heading to the University with a U-Haul trailer. I don't know what was in the trailer but all the weight was in the nose and the tongue was nearly dragging and the front of the Blazer was aimed up. I'll bet steering was lots of fun with that set up. I also noticed the hitch receiver was actually bending every time he hit a bump. Had one bolt sheared he would have been in a world of hurt.
One last thing. Make CERTAIN your equalizer bar clamps will fit on the trailer. Mine have fit on every trailer I've used them on with one exception. I didn't find that out until I was loading the trailer 90 miles from home. Fortunately the shop I was at had a smoke wrench (cutting torch) and it got me home where I could clean the cut and brace it for strength.
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