The engine has been pushed back because the weak crossmember has bent, They are the first thing to fold up, hence you go up a kerb hard in a sierra the tca and the wheels fold up and go under the car,
It would need a proper strip down to see if the bulkhead, front chassis legs and A posts and floorpan haven't folded/Bent.
It does look like the inner wings and struttops are out off align though

Would it be economical to repair no not at all, but the pictures could look worse than what it actually is.