Engine Swap

Does Anyone know what engines could be swapped in a 67 skylark. The cost to repair is as much as a new engine so I figured why not do a engine swap.

You can go from a straight 6 to a v6 you can do a small block v8 or a big block v8. you got alot of room to play with in that doghouse. May need to switch trannys if going with v8 big block.