yeah i already have my door speakers in and it doesnt sound tight... the sound seems to resonate and produce a hollow, vibration sound rahter than a thump. i can already tell in hondas that there will be a lot of annoying rattling. the panels are lightweight and just feel too flimsy. even if i did save up i doubt i wil buy such expensive sound deadening products. i think i'm gonna tape up the edges so if it melts the goo has nowhere to go.