I did hear they have some sort of crazy mil-spec coating on the inside to give them additional bite. I seem to remember a figure of 500-ft-lbs or something like that.
I won't say more since I'm going off just memory but a LOT went into the design of those brackets. I'm sure and ART guy will drop in give the 411.
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"A ship in port is safe, but that's not what ships are built for."
See Bad Penny run the cones: https://www.youtube.com/watch?v=8GUPPIX-92U
1971 Chevelle Wagon - Roadster Shop Chassis ProCharged Shafiroff LS and lots of yada yada
1968 Camaro - Project Track Rat - 440 RHS LS
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