Need help, advice, and numbers

hey guys please dont be mad at me but im in a huge pickle with my truck which is a 73 chevy ck20 and it was this thread or general discussion i figured id get better help here. my truck has been down with bent push rods and between work and school i havent had a whole lot of time to get new rods in and its been to dark and cold when i do have time. my fear is that when i was wheelin last i lost some antifreeze and trail fixed it with water because its what i had and totally forgot about and am worried that water froze and may have cracked the block or atleast the freeze plugs. i am preparing for a new motor even though itll push back my duster progress the truck is a higher priority. anybody know how much an engine rebuild would be compared to a crate motor, have a shop build a motor, etc. please any and all help is appreciated once again plz dont get mad for a chevy post. thank you in advance

What bothers me are the bent push rods. Is the timing chain good? Do you know how to adjust the valves? As the rest have said, If it is not leaking water you should be good. Chevies actually cost more to rebuild since you have to do more machine work and replace the more parts. Beware of crate motors, I have seen enough mistakes to make me want to pull it apart and put it back together to be sure. I'd get a good core and rebuild it in parallel so you won't be down long.