I was surprised to come across this ad.
http://www.carclassic.com/stock.asp?StockID=101391 It is the Ford F3L driven by David Piper in recent years. I saw it twice in South Africa and have a photo here
http://e.co.za/Cars/ford.html
Only 3 exist and it looks and sounds awesome. Any racing driver with $500k will do well to get it!
The Engine is a Ford DFV. Those of you who don't know - It was used extensively in Formula1 racing.