From their page on WIX...
"Small update concerning the Messerschmitt G-12 project for the Hangar10 collection. The huge canopy is nearly ready, but some work left. The engine for that project was under restoration at Vintage V12´s. This time it's not a Mercedes Benz DB605, it's the license product manufactured by Volvo used in the Saab J21. A fantastic engine, beautifully manufactured."