Thanks for your answers guys.
I didn't know pre-L were normal panteras, I thought it was a first modification before L models, so to me they were 3 kinds.
Pantera pre L
in fact the first two are one....OK my mystake, thank you for lighten me.
I am in the very north of france near belgium, my city is LILLE.
So I'm going to buy this book, I really need it as I'am meeting some little problems (one of them is I think upper engine seals are shots)
I wanted to attach a picture but can't make it under 200ko, you can see pictures following this link : http://www.qv500.com/detomasoregistrypan01838.php
But I don't like the pictures on QV500, the color is ugly, not in real !!!
I have changed the wheels to Campagnolo.