I know the 968 came with the 5.4 that had more power(and top speed) than the 928. But I believe that the production numbers on the 968 were lower than the 928.The 928 gt still topped out at 171mph and had around 320hp, not bad for a 5 liter. In my opinion the 968 is the ultimate front engine Porche EVER!!! I envy you if you get one.