I bought this RAM 750 as part of an Estate sale. I don't know much about the engine other than it was mounted on a Fibreclassics Kangaroo when I bought it and it was operated by an experienced Turbine flyer.
Everything appears to be in good condition however the liquid crystal display on the Start/Display terminal is not crystal clear, but is still usable.
I ran in on the bench about 3 times in the last few years with the last time being earlier this week. It runs smooth with a good transition between idle and full throttle and back.