Junior single-seater ace Dean Stoneman and British Touring Car Championship runner-up Sam Tordoff have been announced as part of Strakka's Blancpain GT Series line-up for 2017.
Strakka, which will race in the Blancpain Sprint and Endurance Series' for the first time this year in partnership with McLaren's GT wing, will field four McLaren 650 GT3s in the series.
Stoneman will race alongside Andrew Watson and Jazeman Jafaar in the Endurance Series, having most recently raced in Indy Lights.
He also tested one of Andretti Autosport's Dallara IR12 IndyCar machines in August last year, but has now committed to a full GT campaign for 2017.
Tordoff, who finished second in the BTCC standings last year but left the category to forge a career in GT racing, will add a Blancpain Endurance schedule to his earlier-announced British GT campaign.
The 27-year-old will run alongside Academy driver and Renault Sport Trophy champion David Fumanelli and McLaren works driver Jonny Kane.
The remainder of the British team's line-up for the coming campaign is comprised largely of junior open-wheel graduates and McLaren GT regulars.
McLaren GT Academy driver Ben Barnicoat, who won two races in European Formula 3 last season, will be partnered by works driver Alvaro Parente in the Blancpain GT Sprint Cup.
Barnicoat will also contest an Endurance campaign and will race alongside Rob Bell and Come Ledogar, who were both part of the McLaren Garage 59 line-up that took the honours in that category last year.
Bell will also compete in the Sprint series alongside Watson.
Finally, team founder Leventis will be in the team's sole Pro-Am entry alongside former Red Bull junior and last year's Strakka WEC driver Lewis Williamson, with Craig Fleming joining the pair in Endurance.
"We are delighted to have secured such a formidable and impressive line-up of successful and talented drivers for Strakka's debut in what is arguably the most competitive GT series in the world," said team founder Nick Leventis.
"Running four cars is a significant step up but the entire team together with McLaren GT have worked superbly to get all the cars prepared and racking up testing miles ahead of the season start.
"We've enjoyed getting to grips with our move to GTs but now's the time to get racing and deliver on our aim to continue McLaren's success in the category."