For those of you who have put subs in the factory spot AND glove box, how much dynamat did you need to do the sealing job, keep in mind I am doing one in each compartment, so multiply by 2. Thanks, you guys have helped me so much.

 

im not shure the exact amount but, i have already used five strips of dynomat exstream and i have 50square feet of fatmat in the mail. lots of people have suggested to dynomat the wheelwells and the place were the spair tire goes. so basicly people say to dynomat the whole back. but if you just want to do the bins then i think you will need about 5sheets of dynomat to do a realy good job of it. maybe more.

 

I got a Dynamat Xtreme door kit, which is 12sq ft for the factory sub location at the beginning. ... ended up I need another 4 sq ft to made the job done including the bose sub cover.
So I think you need a 36 sq ft DYNAMAT Xtreme Bulk Pack for both of them.