Vince - It would be great to see an engineering breakdown of the two heads side by side - I assume the Angelini didn't require the special head studs to hold down the cam caps like the AD motors?I have both Angelini and Autodelta 16v engines in my shop, and while the A/D is my own, I consider the Angelini cylinderhead superior from many engineering points of view, ultimately more powerful and better to work on and certainly superior casting quality.
A true testament to enthusiasm for a result and an intelligent and considered approach to resolving a problem.
:- Bravo Ing. Franco Angelini!
Photo documentation of these heads is often the only way many enthusiasts will ever see some of this rare hardware...