I think they are. Same parts in front doors as are in the rear deck. I pulled the grills from the rear deck tonight and found what looked like brown paper bags surrounding the speakers. The biggest consideration here is the 3 legged 10mm(?) hex screws. The 4 mounts in the JL's I have aren't offset like the HKs. I am sure an adapter would fix this, but I am actively seeking a solution that keeps my snips and silicon to a minimum if possible.

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