Well if you watch "Birth of the VROD" then you be told that the Digger prototype took the engine from the VR1000 (which was designed by Harley-Davidson's skunkworks) and plugged it into a bike. They liked it and took the engine to Porsche and with some Harley-Davidson engineers hardened the engine and made it less expensive.
At best it was a collaboration with Porsche. Porsche did allot of good work on the engine including increasing the displacement from 1000cc to 1130cc and making it damn near bullet proof. After over ~500 hours they disconnected it from the test stand.
So technically, Porsche did not design the Revolution. The 60 degree liquid cooled V-twin was designed by H-D, handed over to Porsche for improvement and handed back to H-D for building and installing on VRSC.
Some people believe that the guys building the engine on the H-D line were actually Porsche employees. When I toured the factory in 2007 they wore H-D apparel and I did not see any Porsche logos.
Nice car BTW.
2007 VRSC"Devil rod"
Only 1% of the entire population of the United States have ever served in combat putting their lives on the line protecting freedom. They are the true 1%.
Both of these machines broke with the calcified traditions of their respective manufacturers to move the performance game forward.
Similarly both companies have reserved advanced model development in order to not totally eliminate their obsolete market leaders. Porsche refuses to offer its most powerful engines in the Boxster/Cayman line and HD has never offered a touring Rod.
Congratulations on leaving the flock in your dust.
In my garage it's a 944, but its parked behind the V Rod.