Why not build a 340?

Finding a 360 in so cal is harder than one might think. A 360 is what everyone is looking for. Guy at cylinder head only mentioned that 360 heads are getting hard to find. I know where I can get a 360 block only for $700. Ya, not as easy in so cal as it is elsewhere, it seems. And the other part of getting a 360, I have no idea what year range is best and or the ECU fuel injection, ignition trigger, etc. So many different 360s. Roller cam, heads, ignition, fueling..
years ago, I got rid of a 360 just because it was laying around collecting dust. For me, I had 340's and 318's and the 360 being externally balanced was a PITA for me at the time. I wanted interchangeability as far as pulling one engine and dropping another in quickly so I stayed with 318-340 setups. I wish I would have kept that 360. I haven't gotten rid of many things, but that was one I regret. I basically gave it away. But at the time, they were "dime a dozen" I remember 318's being "dime a dozen" Now they are popular small blocks LOL!