The mod will work with any sway bar that has links.
For instance, it will not work with some Ranger and BII front sway bars because they are mounted from the rear of the radius arms, and there are no links. These type bars need to be removed and can be replaced with the Explorer version that has links and mounts to the front of the axle arms.
The rear poses a bit of a problem in figuring out a way to tie up the bar, which is mounted to the axle instead of to the frame.
I'd say just get rid of it and don't worry. Some heavy duty shocks will do as much as that bar does anyway. Unless you are towing heavy stuff you won't even miss it.
As far as running on the freeway at speed without bars attached... Well...
I do, but I know my vehicle, what it does, and how to drive it. It is NOT a sports car. You don't go "throwing" it into a corner and expect to live. It doesn't work that way with a loose suspension. You enter a corner, then "drive" the vehicle around the corner with a correct application of throttle to jack the weight where it needs to be. This is a basic race car driving skill, but I've watched a WHOLE bunch of people drive all around me that haven't a clue how it works. I learned it while living in Wisconsin and driving about 1/3 the year on glare ice...
With that being said, I'd expect that I can drive next to a linked-up Explorer at the same speeds and perhaps more with my "loose" version (I also have soft springs!). I also tow, etc., with the truck, and its not as if I don't drive it... We live in Louisville, KY and the truck has been to Florida, Wisconsin (just last weekend) Utah, Pennsylvania, and all points between. It is "soft" enough that I can pull it side-to-side by hand close to a foot...

But again, I know how to drive my vehicle and have over 1.5 million miles experience, including off-road racing, SCCA racing, OTR trucking, etc.