I'm sure a few of the engines I have choosen are in more vehicles than I have listed, but this is the best I can do right now.
Mercedes-Benz M120 AMG 12 Cylinder, 7.3 litres, 555PS/650PS-
Zonda F/Zonda S 7.3
Mercedes-Benz AMG V8, 6.2 litres, 480PS/525PS -
ML63/CL63/E63/S63
Mercedes-Benz AMG V8, 5.4 litres, 360PS -
SLK55/CLK55
BMW N52 V8, 4.8 litres, 367PS -
Wiesmann GT/550i/750i/650i
Lexus V8, 4.6 litres, 380PS -
LS460
BMW V10, 5.0 lites, 507PS -
M6/M5
Audi V8, 4.2 litres, 340PS/450PS -
Audi A8/Audi Q7/Spyker C8
Lamborghini V12, 6.5 litres, 640PS -
Murcielago LP640
Porsche 6 cylinder, 3.6 litres, 415PS -
GT3/GT3RS
I'll get back to you with one more..