If you google up the "documentary" called "Birh of the V-Rod" you can see Porsche's contribution to the V-Rod engine. They took a selection of VR-1000 race engines and redesigned them for durability on the street and to meet emissions requirements. For anyone who has lived with and worked on BMW motorcycles, the components of that engine and it's basic feel are instantly recognizable as German. I joke the bike speaks English with a heavy Bavarian accent! Harley and Porsche formed a joing venture company in 1996 to design and manufacture the V-Rod engine, and the joint venture's manufacturing site was located inside Harley's Kansas City assembly plant. You can google around and find old articles in business magazines and corporate disclosure documents that describe the joint venture.
Harley's association with Porsche goes back many decades. Raise your hand if you ever saw a bike Harley nearly produced called "Project Nova"? This was a modular engine, with two bores on a single stroke that could be built as a V-twin, V-four or V-six. The bike was ready for production in 1983 when the program was cancelled due to lack of funds. Porshce was retained to do the major engine design on that bike.
Porsche was also hired to help Harley develop the Evolution engines and the Twin Cam engine, primarily with emissions control matters. Inside all Harley engines you will find German pistons from Mahle and in the V-Rod and Big Twins you will find gears and shafts sourced from Getrag. Early V-Rod engines had even more international content, with French head castings, German powder forged conrods and a forged steel crank from Hatz, a German manufacturer of small diesel engines. Even the gaskets have "Germany" cast into them! As an old "propeller head" (BMW bike enthusiast) this gives me a lot of confidence in this engine. I am guessing, until I know differently, the Revolution-X engine is every bit a quality piece as the V-Rod mill is.
I live in a parallel universe but have a vacation home in reality.