Alfa Busso 12v 2.5 Engine

[ProtoTipo]

Chris. Can you enlighten me on stronger rockers and if they can be bought and retrofitted to earlier engines? (assuming they are even available?)

Hi Steve,
Can you see the difference between the early (left side photo) and the late type (right side photo of my engine). The later rocker is wider in section.
I didn't know this until I read it in 'The Alfa Romeo V6 Engine High-Performance Manual' book.

'No idea on availability new. I'd be surprised.