Porsche tried once with the 928 and it failed. Despite the fact 928 was an awsome car it was never a 911 and the 911 fans remained loyal to their old friend. The 911 will no longer be a 911 with a mid engine V8 and it will lose it's appeal should that ever happen. The gamble and the risk will be too big for Porsche to convert such a legendry car to a mutant. The new 4 door Porche (Panamera) will probably be the only V8 Porsche next to Cayenne. Look at the 356 and look at the 997, you still see the resemblance(s) that's the beauty of the 911. It will always maintain that familiar look, an advanced RELIC perhaps.