I am working on 54 chevy 3/4 ton. 235 engine. allegedly running when parked. I am trying to improve my chances of getting it running when I reassemble everything.

I pulled the engine. took head to machine shop for valve job. I was inspecting the block and noticed the front and rear main bearing caps are damaged/cracked/busted. I believe these are referred to as lower; it is piece where you find front and rear oil pan seals.

the truck had some front end damage which likely explains it. can I buy main bearing caps at FLAPS? any thoughts on what else might be damaged inside the block by a force that would crack the main caps?
thanks