Hi people!
I really can't find any matching pictures on the internet to the seats in my 81 Z28. I am confused because I there is a "double line seam" in the middle this seam doesn't match the seats I see on the Internet. Please help me because I need the matching front seats. Thank you so much for your help and if you know some good websites to buy the seats let me know please.

Ole

These are seats I have, in the middle you can see the two lines running parallel to each other