I am sorry to say that you are absolutely ill informed or uneducated about Fiat engines. The Twin cam is a Legend that has no American or even any European matches in terms of design, robustness, cost of production and maintenance and competition heritage.Depends on whether you consider price and reliability. Fiat engines in those days were unadulterated crap. I like engines that last 200,000 miles and can be driven all the time without having to be tuned once a week by a specialist. Electronic ignition came really late to Europe, didn't it?
You might want to read up before you come to illinfomed conclusions. Bialbero: All the cars powered by the legendary Twin Cam: 9781527279445: Amazon.com: Books
I think I will take an expert’s verdict over your personal preferences!