To install properly you gotta drill the factory thread out. Think about it two threads against each other. Both of the threads you cant turn cause they in a fixed position so when you tighten the bolt your only going to be tightening to the chasis nut while the subframe brace bracket will most likely be sitting there not hard up against the chasis frame not doing its job properly.
Its sort of like locking the perches on your coilovers you have to tighten them against each other to hold tight. But with the fitting the ASR none of the threaded parts can be moved.
I been waiting for someone else to actually see this and yeh wasnt on install instructions Ihad either . Just gotta nut it out.
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