So then.... bit of a hypothetical debate.... IF you had a lightweight mid engined kit car or building one and were inclined to favour an MB engine... What engine would pack the most bang for buck. No electronics involved traction control or ABS, no power steering etc and probably a stand alone ECU. Forget about SVA rules etc....Room for a big engine ....(so V8s win it for me....) First two obvious answers to me would be the - M113k 5.5 supercharged V8 ... bings of torque and a smooth power delivery to help things go in a straight line, I know turbos would be more powerful but in a lightweight car steady predictable delivery is probably king.... and so very tuneable with a pulley and map. - M156 6.3 V8, the noise alone would probably win that one, but also its a revvy engine, if the car is light weight you don't need a massive surge of torque at once and means you probably have to think about it before going quickly.... bit like 4 cylinder bike you need to use the power bands to go uber fast rather than get there by accident like a v twin of the supercharged V8.... bit pricier than the M113k but potentially more reliable? discuss.... any other contenders..... is the above BS or not... any examples???