The famous XJ 6 cylinder DOHC Engine was probably one of the most significant engines of post war Britain. Jaguars V12 not so much. But now there is an (expensive) way to make it great.
Based on the XJ13 Racecar, that sadly never made it to Le Mans, V12 Quad Cam, a company in the UK, keen to not only build the engine but an exact XJ13 Replica, took on the challenge to "merry" the 6 cylinder DOHC and the SOHC V12 heads with space age technology to create a 520hp (racecar) engine.
An interesting article, on what is possible today
Click on the picture or on the link