A friend of mine has a GE E15(I think) and a New Idea EGT 150 - mower decks are there, also an electric roto tiller and even an inverter and small tiller 120VAC that went with it. I have pics, if you are interested. Back in the late '70s/early 80's they used these to cut grass on their farm. Kept in a barn all this time - in Grundy County.
Contact me if you're interested and I'll let them know these are marketable.
-TK