Machined to fit register 
then line bored so the block pads will be machined moving the crank closer to the cam
yes you can move the caps to a different block ,registers may need to be welded and remachined. 
with today labor cost new caps will not cost much more. 
I fill your pain I have a junk block with 3 caps, that looks like a good  short block and 14 bolt may not be as desirable as a 20 bolt but if its not hurt I would worse a set of new caps