I would call Cain at Wolf Performance or Spanner Juggler to get advice. They do /did this for a living.
When my S1 was hit by a white van man back in August it led to c £30k rebuild including the cross head as he hit at TDC of the front tyre. That involved a new wing, cross head, king pin & axle stub.
You can see in the photo he initial view would be that can't be so bad.
![[Linked Image]](https://www.tm-img.com/images/2020/08/24/20200824_105415.jpg)