Oh yes - tomorrow I'm off to the paint shop to try and get a match so I can blend in the parts that need to be repainted.
The list of possibles so far are
70 - the lesser known p1800 red
155 - the blinking common late 1970s Signal Red
I've got a cover for the (badly cut) hole in the dashboard for where the radio was that has been painted the same colour as the outside - I'm hoping the paint shop has a detector gun...
EDIT
I also forgot to show something else I found today.
Took out the back seat base and found the original upholstery
The interior code on the ID tag says it was factory fresh with 40-197
And that if I'm not mistaken that is indeed 40-197 albeit with what looks like blood stains on it (happy days)