If you check page 132 of the 1984 reprint of Geoff Healey's book, Austin-Healey, The Story of the Big Healeys, you'll find a photo of this car with a caption reading, "A special car on show at the 1977 National Day [he refers to the "National Day" for Healeys in the UK]. This Austin Healey consists of an X250 'T' (for tourer) chassis fitted with a front end used as a styling exercise (X230) in grafting on 4 head lamps. The chassis incorporated a De Dion rear axle assembly and was road tested in August 1960. We never liked it."
The "we" would be the Donald Healey Motor Company. Still, it's an interesting insight into auto development and styling of the day, and it is remarkable tha the car has been preserved and apparently restored.