The V6 was powerful and compact. The transmission was automatic only though as far as I know. The axle is across the engine rather than the usual position in the bell housing which could make for a shorter installation.
Of course it's a 180 degree "V" 6 but the Porsche Boxster and gearbox is a great engine:
And the 5 speed gearbox is direct bolt-on for most Audi motors too including the V8