http://www.radiantz.com/index1.html?c10.html&1
Under Categories ->Driving Lights.
Not identical, but I think getting close! Motorcycle stuff primarily, Looks like they do custom work too.
EDIT: Found another, this are 3" strobe, but I bet you can hard wire to always be on.
http://www.voltexlights.com/chplpaof1wag.html for sale on eBay:
http://www.ebay.com/itm/2-NEW-3-ROUN...item45fffbdc70