Re: My system is weighing down the back of my car. What can I do?
They do make coil spreaders that go between the coils on the spring and spread them out a little. Might give 1-2" of ride height.
If they make bags that fit your car easily, you don't have to install a compressor and tank. Just run a line with a shrader valve on the end of it from the bags to under the bumper or to the trunk... Pump them up once a week or so. This is pretty common for 1/2 ton pickups that needs a little extra support so they don't squat so bad when loaded down.
I'm sure you could also have some strut spacers made if the rear struts are like most vehicles. They're just a block of aluminum usually that moves the strut down and lifts the rear of the car. But be weary as it will change the alignment on the rear and it might wear tires or handle funny.
IIRC there is about 20lbs per sheet of weight savings with Birch plywood. I don't think the juice would be worth the squeeze to make a whole new box and save 50lbs.
1994 Toyota Camry
Rockford Fosgate 1050S
12" DD 3512C
2.5 cuft, 35hz