Sent you a PM back Dano
Hacked in this case is not a bad thing
If you can, try and find a Halfrauds or car audio shop that still have the F900BT on display and want to get rid.
I was lucky enough to spot one in my local Halfrauds and it was on a managers special, guess they needed the space for newer models that were coming out. I paid £350 for mine boxed and nothing missing, add the various looms, boosters, ground loop isolators you'll need and iPod cable and you prolly have to add another £100 odd.
Main thing during install is patience and being gentle with dash trim, other than that it should be pretty straight forward.
Good luck with the shopping and install