Are 340’s rare

I've got 3 standard bore 340 blocks as extras and a couple standard bore 360s. I bought them when they could still be had reasonably.
I had a standard bore 340 block for years I just decided to build it a year or so ago. 'waiting on the heads at the machine shop now to finish it up. The are good when you have them the only guys that talk smack are the guys that don't have them.