sentences:  With only a single victory for their sportscar program since 1995, it was decided that Nissan would immediately end the R391 project in early 2000, leaving Nissan's only motorsports program to be in JGTC.Nissan would therefore turn down its automatic entry to the 24 Hours of Le Mans.Nissan would not attempt to return to sportscar racing until 2005, when it experimented with the possibility of returning by supplying British sportscar team Rollcentre Racing with a modified turbocharged V6 for the 2005 Le Mans Endurance Series season as well as that year's 24 Hours of Le Mans.