so far I have the Alpine 7894 Hu fitted and working, 4 guage power wire all fused routed to the boot, Stinger dream rcas routed to the boot.
http://homepage.ntlworld.com/mathewroberts/1904.jpg
Built the sub box a couple of weeks ago. Base is cut for the false floor. The next part will be to fix the base in the boot and to get the amp all wired up. the sub will then need securing to the floor.