Apples for apples a new alloy block is about £2k more than the same spec new 200 block, after that all the add ons apply to both anyway!

So a fully built up like for like engine is just £2k more going the alloy route.

They weigh half that of a 200 block, in my single seater 25kg is a massive saving which is why I sold my 200 one and plan to replace it with an alloy version.