Thanks for the replies so far, Kaz & Jon.

I'd try & source another console, so I can put back to standard when I needed to. I'm thinking of direct replacement for the head unit, with a link lead into the standard harness connectors, so an off the shelf aftermarket unit is preferable, that has all the 'mod-cons' built in, so there's no need for link leads etc.

I've looked at the Willman conversion before but I think it's a bit expensive & I'd rather have the original unit ready to be put back in, rather than have it adapted.

So basically, if anyone has fitted a more modern double din unit, with sat-nav, bluetooth DAB, what did you fit & is it any good ?