Talk about a tight fit. This Porsche 911 has a supercharge LS1 V8 stuffed in the back replacing the original flat 6. One might think that the V8 would be heavier but thanks to a lot of aluminum the LS1 is lighter then the original engine the driver shaved off around 21 pounds total. No official notes of the horsepower it is putting out but it has to be 400 or more. The owner also stuffed a LS1 in the back of a Porsche 914.