hmm, same here! i am currently making boxes for the subwoofers. i have bought a wiring converter and it doesn't fit so will need to do something else. here is the system that i'm fitting:
Optima Yellow Top Battery (fitted by TDi)
SQL+ Fascia plate (purchased, waiting to fit)
Audiotoys Toyota Wiring Harness (doesn't fit!)
Alpine 9013R Head Unit (purchased, waiting to fit)
1 x Audiobahn 1801DQ (purchased, waiting to fit)
2 x Audiobahn AWT12X (purchased, waiting to fit)
Focal Utopia 165W2 Components (purchased, waiting for delivery)
Focal Audiom 6W (purchased, waiting for delivery)
HiFonics ZX6400 (purchased, waiting for delivery)
18mm MDF (purchased, in the hall at home!)
Sub-boxes - started to make from above MDF
I will be taking notes and pictures when I install so I'll post up any info thats useful