£5,000 to re-veneer a dash?
You can get a whole car for that
Having done some work on my 411 dash I can say that it is incredibly fiddly and time consuming removing and replacing the instruments, labeling all the wiring and putting it back together.
However, if you're prepared to do the time consuming stuff yourself, a good cabinet maker should be able to reveneer and varnish it for you for a fraction of the price.
If you want to pay someone to do the whole lot, any decent car restorer could do it for you. There's nothing particularly complex or proprietary about it.