Anyones guess is a good as mine. I just thought it was interesting so I took a picture. I had read other threads about dip lines, so I took a picture of those too. I also found a word written in grease pencil on the passengers door but it was too faint to make out. I took a picture of it too but it didn't really turn out very well.

The trans is a 904 by the way. The car is a Rallye but has the 318.