Which k member is this?

He said it was for small block and he modified it for big block. Just dont know if this can support any engine at this point
i'd call that sus AF. to fix it right you'd need some pretty decent fab skills and experience with building motor mounts for swaps. even to put it back to stock you'd some welding skill and the critical measurements (or like one to set side by side and copy).

which, i don't know why you'd go thru the trouble when there's k's floating around out there and swap kits or aftermarket k's specifically set up for those motors.

@Jim Lusk is a member here who's very knowledgeable on these K's and could probably repair it or at least give you an idea if it's trash or not.