Yes your right they were all cardboard,
I saw them on ebay last night and I emailed them on the 13th of this month and still had no reply so I rang them an or so ago and they ask me to re email and they will get back , waiting ,waiting ,waiting ha ha
I wonder if you take a 2 door board and cut it back to suit the length of a 4 door and then turn the left hand side around and put it on the right hand rear door and cut it short then trim them,and same the other way,
Just a thought