Everybody extoles the wonderful virtues of the Ferrari V12s and their signature exhaust sound and performance like no others. But Jaguar and BMW have had V12s in their various production cars. How come you don't hear much about those other V12s and their usage in hot rods and custom cars? Jaguars and BMWs are much more common, so the chances of latching onto a V12 out of a wrecked car are much higher. But you just don't hear much about them. It would seem to me that a Jag or BMW V12 would make a great hot rod engine or dare I say, a replacement for a long lost Ferrari V12. What's up?