ya
you can do the bare minimum if your short on cash
Mine that we just did i think was pushing over $2000 but i used the best of everything and bored out, new pistons, rods, rockers, lifters, heads, camshaft, waterpump, etc
Didnt have much of original left.
So theres cheap to expensive. Most people do in between.
Theres nothing wrong with minimum but if your going to rebuild your engine you my aswell make it better then it was before.