Thankl you very much for all the information!!
After reading all posts, I decided not to drill my front fenders.
Now I am working on car's interior. The seats are looking nice, unfortunatelly not so original, but I think the upholster did a great work.
I haven't found the Type LT original fabrics, so I decided to use something a little bit different, as you can see in this picture. It is a mix of leather and velvet:
The car's original interior was black (code 778), but the last owner changed it to gray/black and I really do not like black interiors (I have two other cars with black interiors
So, the upholster will change the seatbelts and I will paint all other parts beige. I intend to buy the carpet in the USA in my vacation trip in August.
I have two dash trim bezels, I guess my car's original is the darker one, but I am not sure: