If your saying he is using two V8's from a Mercedes w126 those would be M117 motors and the 5 litre variants did not produce 300 hp, not even in AMG spec. From the looks of the photo those are single cam motors, also leading me to believe each individual engine does not produce 300 hp... Impressive non-the-less. » 9/16/14 3:36pm 9/16/14 3:36pm