your doing nice work no doubt,
but,
ive done IB before and i can see a problem with what your doing.
useing foam strips between your beautiful new shelf and your origional vw plastic shelf supports and the rear seats wont work well,
because,
when you get any kind of serious volume going you will start to move serious air, that air will force its way to wherever it wants to go, anyway it can, any how, by any means,
= complete loss of sq and SPL.
you install will sound absolutely beautiful up to about (im guessing here) 110 db after that volume the air WILL do what its best at.......... escape.
if i am misunerstanding your pictures then ignore this post,
but if im right, and you want the sq only an IB install can provide, AND, some good spl,
YOU HAVE TO SEAL EVERYTHING AND SECURE EVERYTHING TO EVERYTHING COMPLETELY.
NO EXCEPTIONS.
or air will escape and you will be bitterly dissapointed about the amount of time and love you put into this install.
i have $100 here, sais a single 10" sub in a sealed box will actually be more satisfying overall than what your doing if you dont seal the chite outta everything //content.invisioncic.com/y282845/emoticons/*******.gif.a649d21efc0d1fd4890a6428166586c1.gif
but if you got all these points coverd 'fugedabawdit'