Custom car: IMSA S 63L 4M

Although German tuner IMSA is best known for its custom Lamborghinis, it had a Mercedes connection before its Lambo days, having represented Merc specialist Kleemann for a while.

IMSA’s take on the Merc flagship saloon is a rather comprehensive overhaul that includes both cosmetic and performance enhancements.

The biggest change though is under the bonnet, where the 5.5-litre biturbo V8’s stock 585bhp output has been dramatically boosted to a whopping 720bhp, while the peak torque has been upped from 900Nm to 1,080Nm.