Love the 40's American look on that minor. coincidentally happened to have found this one while looking for classic Lancias on ebay yesterday -
http://www.ebay.co.uk/itm/2519300122...%3AMEBIDX%3AIT
That used to be a common conversion back in the day, there were at least two minors with Fiat group twin-cams fitted in the RAF St Athan Motor Club back in the seventies.
Not seen one on an early convertible though. Hmm, where's my cheque book...