<VV> More Engineer Help Needed

[LAURA and JOEL MUISE]

I just wanted to start by saying "thanks" to all that responded to my request for help on the last go round with the Top Up Tonneau project for the Rampside.  I'm constantly amazed with just how freakin' smart the people that populate <VV> are.
 
This time I'm looking for some help with metal.  I need someone that can help us with the strength of different kinds, and wall thicknesses of steel that are used for the scissor arms on the tonneau lift.
 
Thanks in advance!
 
Regards,
Joel