I am trying to do something similar with my non-Sony MFT. I will be installing the component speakers next week, a JBL MS-8, and some left over Alpine amps. I was also trying to determine how to fit a sub under the floor, door depth, etc. I think two shallow 8" will fit in place of the plastic cargo management bins, but I don't have any experience working with fiberglass. I have been searching for any other '11 Edge's with aftermarket audio, and have come up empty.