Amp Rack for 2007 Aveo Sedan

I decided to go all in with an aftermarket sound system and rear view camera for my 2007 Aveo LS sedan.
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It came with a premium six speaker sound system. New system will include a Pioneer AVIC 8200NEX head unit; Infiniti Kappa 4 amplifier, and Infiniti component speakers front and rear. First job was to build an amp rack under the rear parcel shelf. I went witha $6 sheet of bull nose MDF (3/4 x 16 x 36) from home depot, which i cut to fit, plus two hex bolts (6"x 3/8-16), and a hinge system in the back to allow the rack to flop down for adjustments. Hinge system would require a 1x4 piece of wood along front edge of trunk, with hinges mounted on the 1x4 and on the MDF sheet. back edge would be either 6" hex bolts. Got the wife to help me upholster all the wood so it looks nice. still working on it but the rack lets me use 90% of my trunk space and protects the rear speakers.
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One other thing. To attach the amp rack I had to drill four holes in the sheet metal behind the rear seat. You can see the four holes marked in this pic. I then attached the hinge side of the rack -- the 1x4 -- to the sheet metal with 1" bolts (3/8, using rubber washers, round washers and lock washers).
I'm encouraged by all the posts I see of people with Aveos with 60K+ miles; i figure i'll be driving this car to work for another 3-4 years at least and will have plenty of time to enjoy the tunes.
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For the 6" bolts on the rear side of the amp rack, I was able to use two pre-existing holes on the parcel shelf, perfect size for the 3/8" bolts!
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