David Ullman N444DX SE/FG
David's airplane was sold to Robert Ibrahim around 2014 or so, and is for sale again in February 2017 on Barnstormers.
Check out David's website, where he's published some great work on improving cooling flow into the NACA ducts/overhead cooling plenum.
Airworthiness Date: 09/20/2011
Builder: David Ullman