Six cylinders of diesel?

What do you think of a 6 cylinder diesel engine for the models V70, S80 and of course for the XC 90. All other suppliers in the price segment also upgrade up and after a test drive in the XC 90 D5 you know that the machine is actually overwhelmed. My friend advises right away to install the Heico chip. On television I heard the other day that Volvo wants to bring a stronger D5 (all the same that Heico does). But I mean such a D6 (as Beis piel for a name) would have style. From me also the 2.7 Bi Turbo from the Jaguar (is the same family and comes anyway from Peugeot, only got a second Turbo). But definitely something with a little more steam to get more comfort with a brisk highway ride. What about your opinion? Unfortunately, the Americans don’t drive a diesel, otherwise there would probably be an 8 cylinder diesel!? Greet Sven