Well this is the first I have heard of these anyway..
- A V8 CSL using the S62
- E60 M5 with 150kg weight reduction, carbon roof, DCT, rebored to 5.7 litres, 630bhp and a 9,000 rev limit
- E63 M6 with the same weight reduction, DCT and active aero!
https://www.topgear.com/car-news/sec...8y50_Eh6OA8YFY