[Yes, it would be fun to have an 1:8 RC Murena
My good friend Peter Ratcliffe started the site
www.amazing43.com (modelersite.com) and with one of his friends, they have many many 1:43 models. Peter produced the prototype models, and had them mass-produced, so I keep pestering him for not including any Matra's - he could even take the measurements and detail-photos of my car
.
In 2006 he however retired from the business, and as far as I know he is now living in Bretagne, while his friend Mario Covalski continues the sites.
They are mainly focused on 1:43, but have no Matra's in that scale. However, in their "archive" there are several Matra F1 and Le Mans cars in 1:12
And now we're at it, they also point at this:
http://www.modelersite.com/Ago2005/English/Matra_Eng.htm/Lennart