TS-
Are you speaking of the parts listed above? Just went to Lincolns website, the only part available for the heat riser tube assembly is the strap. What a pain. A gentleman by the name of Wayne from Pine Hurst Texas contacted me, he has a large supply of take off parts from these machines. Call him at 281-642-7706 evenings and weekends.
Shad had a take off radiator shroud. The radiator cap cover from a Classic 300 will work on the SA-200. You have to do a minor amount of modification (weld on) Here is a link to the Classic breakdown. Go to the parts page, radiator section and look at the cap cover.
http://www.mylincolnelectric.com/Catalog/operatorsmanualdatasheet.aspx?p=33994I will post pics of the OEM heater riser assembly parts, so that you can fabricate your own.
Is your code# 6073? Here is the parts and owners manuals: You will see that Shads parts from his code number will match the parts you are looking for.
http://www.mylincolnelectric.com/Catalog/operatorsmanualdatasheet.aspx?p=29145