[supra93]

https://www.supramkv.com/threads/new...a.1306/page-67

Originally Posted by Guff

I was told by another source completely unrelated to A70s source to expect an iron block and a well flowing head. This was maybe 3-4 days ago. This source is not an engineer but someone close to Tada-San that had been in and driven the car.

The iron block was still pretty unbelievable for me too but with the latest stuff from A70 and now this, I can't help but be a believer.

Originally Posted by A70TTR

it's solid iron, but I believe it's likely composed of CGI. What I don't know is specifically where the block came from; I was told it was an existing design that hinted at the M57, but my latest conversation almost sounded like the motor will still carry a B58 designation (different version number?)

As Guff said, one of Tada's closest friends made a FB post about the block being iron a few days back if anyone was still on the fence. This particular individual is privy to product planning/PR and engineering efforts and generally knows this information before anyone else outside of Tada's inner circle (even myself).