Re: amp placement?
1/2" mdf floor under the carpet then screwed through it's been holding mine in place for years and through a couple fender benders just cut it to conform to the cars shape and box placement, and I'm sure I have less trunk then you I have a 2002 corolla and I have it done in there.
electrical: Optima yellow top, big 3 in stinger 1/0g
HU: JVC AVX-77 touch screen
Front stage: RE XXX 6.5" comps
front stage amp: Rockford T600.2
subs: 2 Rockford T1 12's,
sub amp: Rockford T1500.1BDCP
Enclosure: center port(designed&built by JayDubb757)