I cant tell you that's a pretty complex engine. I like BMWs idea of building engines: "Lets mash two inline 4s together, shall we? "M62" sounds badass. Two inline 6s? Yep, 8 series is good enough to kill everyone with normal V8, let's make it even more deadly. What about doubling something like straight 8s? Hey, no shit, that'll fit 7 series just fi-ine. Nope, gotta mount rad in a boot? No problems, we'll do it just for kicks." (1, 2) Seriously though, good engine choice. Gearboxes are uber badass, IIRC they are the same Getrag as M5 ones. Even some of i6 boxes are getrag (s250 or something like that, no idea what are they)! I love your car more now!