Hey Zero-322,
The guy to ask is AluminumOvercast. He is finishing up a Zero that he detailed with full panel lines and rivets. It's just awesome. Every time he brings it to the field we all just drool. If I remember correctly he found they used both.
Here's a post of his work. Look at post 218.
http://www.rcuniverse.com/forum/m_64...9/key_/tm.htm#
Joe
www.thecaterhamproject.com