Welcome to the forum Pit_VL,
Not owning a VL makes it difficult for me to say yes or no.
Funny you write about this though, I was over on a Car Audio Australia earlier today looking for some other info and came across this thread a short time ago. It may not be a great deal of help but at least it's a start. From what I have read these guys over there really know what they are talking about.
I somehow doubt the dash will need to be broken, it may just be a very tight squeeze in there which is often the case. I know my current stereo has a bolt right at the very back which is difficult to get to but there shouldn't be any need to break anything.
Just take your time and analyze what needs to happen and you'll be amazed how easy it will come together.
There are a few guys who own VL's which are registered here, hopefully one of them would have tackled the stereo before and able to help you out.
Else fails pop a thread up on Car Audio Australia and no doubt someone has had the same sort of problem and they'll be able to sort it out for you.
Cheers
Darren