Hi and welcome . I only live about 15miles away from Grizz , and you will probably notice when you read his thread , we often help each other . There is Ian in County Durham who contributes to this board . Not quite Scotland but a lot closer than us to you . As for the dash, I took mine out from my old cab , ready to install into my new one . As the new cab well new to me that is had been butchered . So if you need any advise your are more than welcome to ask .
This is the state of my dash in the new cab
This is the one I removed
So good luck and these trucks are worth doing so just enjoy