340 vs 360

I don’t have the time, tools or place to build an engine properly. So I am looking to buy one already screwed together. Plus I don’t want be doing it with a learning curve.
I’ve seem people that actually knew what they were doing have to pull one back out to fix something.
So I’d appreciate help on the Chrysler crate engines relating to street reliability if anyone knows.

It seems to me that once the engine displacement is modified, it is technically neither a “340” or “360” anymore. It is something else.

Put another way; imagine if someone had no knowledge of what is being discussed here.
If all they understood were cubic inches, this would be very confusing.

Put even another way; how many time have we been ask if our car has a (fill in the blank engine) by someone that is clueless other than the reputation to that particular cubic inch engine?


So I suppose the question is which block is best to modify.
And that must involve a cost/availability/use discussion.