Motor Mount Adapter Help

[mccurrkm]

Hey guys...I am working on a LS swap for my 85 Chevy c10 2wd. I just bought an 86 that has a 2005 6.0 and 4l80e already in it. I am going to use it as a parts donor for mine. When trying to get an idea of where he left the project, I was asking the guy about all the parts he put in it. When asking him about which adapter plates he used to mount the motor mounts, he said "It just sat down in there man and bolted right to the stock mounts." I'm starting to think he didn't do much of the work. Here is a picture of the stock motor mounts bolted to what appears to be the adapter plates...I'm new at this so I need a little help identifying what adapter plates these are or if I'm even looking at the right thing. Anyone know which ones these are? Thanks for your help...this forum is awesome!