Hi Guys

I replacing my engine block on 2006 v9 jdm.
I was looking at factory crate job from import car parts.

https://www.importcarparts.co.uk/product/subaru-ej207-short-lock-engine-motor-impreza-forester-legacy-10103ab470/

OR

https://www.importcarparts.co.uk/product/10103ac510-subaru-jdm-ej207-n14-thick-walled-heavy-duty-short-block-motor/

What the difference between the two short blocks.

Thanks
Donie