How much should a basic 340 rebuild cost?

I remember rebuilding engines back in the day and we didn't have them balanced. They ran fine and didn't vibrate or shake. I'm not saying that it's not necessary or a good idea.
just because you did something one way, don't mean it's the right way to do it.

maybe you got lucky. maybe it was balanced and you just didn't know because they didn't specifically say so.

ANYWAY i'll say it again, so you can hear it up in the cheap seats: just because you've always done it that way, don't mean it's right.

I'm sorry, my bad. I have crs.

how can you have CRS when you NKS to start with?