Nicolas Lapierre, class winner in last year's Le Mans 24 Hours, will switch to the LMP2 category full-time in 2016, having joined Signatech-Alpine's WEC squad.
The 31-year-old will partner American rookie Gustavo Menezes in the #36 Alpine A460.
Lapierre has six overall WEC wins from his time as a Toyota factory driver and was on the class podium in all three of his appearances in the series last year with KCMG, who will not fight for the LMP2 crown in 2016.
The versatile Frenchman also served as a Lada works driver for the final four rounds of the World Touring Car Championship last season, but won't be reprising the role in 2016, with the Russian manufacturer having already announced its full line-up.
The Signatech WEC entry was piloted by Nelson Panciatici and Paul-Loup Chatin full-time last year, the duo taking a win at Shanghai with the help of single-seater ace Tom Dillmann.
The team's other entry for 2016, the #35 BAXI DC Racing Alpine, also has two confirmed names for what is set to be a three-driver line-up, with Chinese duo David Cheng and Ho-Pin Tung having signed on.
Lapierre, meanwhile, is also set to run in the European Le Mans Series with DragonSpeed - and will participate in the upcoming Sebring 12 Hours.