It's a turbo 3 cyl ( yes I am aware that all my research shows ford never made a turbo 3 cyl)
Here's the relevant data
Tractor # c579957
Mod # df311f
unit # 8f213
eng # 8e01b
tran# 80200
Thanks here is photo proof of a turbo LOL
<img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=336581"/>