We made our own after a friend bought a set. Really the only thing we copied directly was the pivot. It's pretty easy to make the rest with tubing, spacers, flat stock and heim ends. We have less than $100 in materials in them.
I do have Calvert split mono springs and, up to last year ran their single adjustable shock.
It's not rocket science. Lots of other products out there with their own take on this. The Assassin bars are just one example.
They do work well as we've been 1.36 60 ft. with a 275 drag radial and 3,700 lbs. street car.
'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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