Got it:
Convair NC-131H TIFS (Total In-Flight Simulator) reg# N793VS
"
The front cockpit could be set up with the cockpit of anything and through computers the aircraft can be made to handle as that particular aircraft."
http://www.airliners.net/search/phot...nct_entry=true
(I still want to give the turn to proptop for working hard in this)