Little Grey Fergie

A different kind of motor for me to photograph.
I spotted this Ferguson tractor at our local heritage centre. It's a 1949 Ferguson TE 20 with a double farrow plough. I'm told that it has a standard Vanguard engine with a modified cylinder head and injectors instead of spark plugs. 
It was in use at Kirkton Farm in Houston until it was restored in the late 90's.