Advice needed on manifold repair

Got this in a swap

lots of cracks

Wasn't too interested till I found out it's 68-70
340.

Isn't this the best 340 manifold or was the 71 better

Looks like someone attempted a jb weld patch on the back of the manifold

I have never seen a manifold crack this extensively

Not concerned that it will appear patched

Was this one of the manifolds Mopar copied or vice versa

View attachment 1716219441

View attachment 1716219442

View attachment 1716219443

View attachment 1716219444

View attachment 1716219445

View attachment 1716219446
Cmon man, you got to be joking.