Norman did warn me to put plenty on both bulkheads, he also mentioned that putting it on the back of the dash is also very effective.
As you've probably seen on my site I just put it everywhere, even on the roof! I doubled up with acoustic foam in some areas. I think inside the doors is the only place I didn't deaden and I don't seem to be suffering from it, maybe the trim with its foam backing does a good job?
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