Cheers for the comments guys, but I can't take credit for it, I bought it with the stereo in it. The amps are Blitz, 1x1000w and 1x5000 which I'm pretty sure are cheap ebay items? And the subs are Sony 15" explod 3000w in custom boxes which he didn't line with any dampers, so that's a job for this weelend. Thanks for the offer of amps etc, but will stick with what I've got for a bit. Getting married next year (yeah I know,lol) so no $'s for luxury items at the moment. That's why I bought the skyline. last chance before I don't have 100% say in where my dollars go.
Thanks for the help too, will have a look over the whole wiring and see what I can find.
Skyline on!!!!