Ok, I think that there is a way to get a 'deck lid' in the back of the my '91 HB. The question I have is, did any of the HB's come with a lid, or are those hooks in the back, next to the speakers, there for show?
That is a cargo cover, or a parcel shelf. A deck lid is the trunk lid of a car that has a trunk, such as a sedan. IIRC the cover in question was standard on even the lowest HB version throughout the entire 2nd gen run. Someone can hop in and correct me here. Even if i your car did not come with one, it does fit, so check your junkyard.
Well, I'm putting some 5"x7"s back into the speaker compartment as I need the space. Plus, I've got 4 6" subs (take up 39"x19"x7") in the back, but I want to elevate 2 of them so that I can more properly hear the bass while driving (the back seats kill the sound). And thus eliminating 2 subs, getting more hatch space.
Getting a cargo cover, and modifying it, so that it only holds the subs is my solution. I need that space.