[cobra]

Since 2003 I have mounted a Shelby aluminum engineblock # 299 and drove about 7000 street miles without problems.
Perhaps it is also because who builds the engine. Mine was built by George Anderson (Gessford), who really knows what he is doing and delivers a super quality.
At that time I wanted an aluminum engine because it is lighter and more modern. Casting blocks in Europe also have a somewhat antiquated reputation since no one can imagine a Ferrari, Lamborghini, etc. with a gray cast iron block.
Maybe you can get more power from a cast block than from an aluminum, but I still eat a steak rather than a piece of Toffu even if it makes me healthier.