Vytas, The V5, thats an easy one - its half of the Chrysler Viper/Ram V10 engine. I believe Audi will be making this under license starting April 1st, 1998. Pleny of half V12s around and who on this list (no names no Phil Paynes) remembers the Ford "half of a V8" V4 in the Corsair and Zephyr :-) RAC - I love my half of a V12 A4q