I found these pictures and a video of a gas shock engine lid opener for a Speedster that a guy in Finland fabricated. Very clever and works great!
Here are the links:
http://www.vw1950.com/images/Opens_356_decklid_vw1950_com.AVI
http://www.vw1950.com/Speedster_1954/album/slides/Gasdampare_vw1950_com.html
http://www.vw1950.com/Speedster_1954/album/slides/Gasdampare_vw1950_com%20(2).html
http://www.vw1950.com/Speedster_1954/album/slides/Gasdampare_vw1950_com%20(4).html
http://www.vw1950.com/Speedster_1954/album/slides/SSL13660.html
http://www.vw1950.com/Speedster_1954/album/slides/SSL13661.html
http://www.vw1950.com/Default.aspx
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