I just placed another order with the Por-15 Outlet on Ebay with free shipping on multiple items ordered. I will be painting my bed wood with the por-15 as recommended by Mar-K. (3 coats of Por-15 and then 3 coats of Behr Semigloss black)
Since I'm going for the OEM factory look, I did a lot of research on this topic. I just wish that someone would have had information on what the GM factory did to treat the bed wood. It lasted about 30 years as designed.
Here is a link to the test wood on the Mar_k site.
http://www.mar-k.com/final_summary.html