Some of the links and photos have 'died' in this old thread.
rbcbearing.com has a good pdf showing the solid rod ends available
Here is a current Speedway Motors link for tube and joints:
for example a 1" o.d. x 18"x 3/4"-16 tube(measure yourself!!) is here:
http://www.ebay.com/itm/Speedway-IMCA-Approved-3-4-Thread-Swedged-Steel-Tube-18-Inches-Long-/261872099895?hash=item3cf8cb2237:g:HuMAAOSwBLlVQsx B&vxp=mtr
http://www.speedwaymotors.com/Swedged-Steel-Tube-3-4-Inch-Thread,2091.html
cheap solid rod end LH:
Standard Steel Heim Joint Rod Ends, 3/4-16 LH Male
You would need RH and the correct bore size for the bolt (7/16" = 0.4375")