Are 340’s rare

Interesting, I sold a Dart that I thought had a stroker, per person who sold it to me. Well, took said car to my buyer, they drove it, was completely satisfied on how it ran, power output. Told me, "it runs very good" Well, sold the car. Get a call a few days later, seems it is not a 360 stroked, but ONLY a 340. Well, I refunded some money, it is only right, BUT they told me "if it were only a 318 I would not want it" AFTER saying how good it ran!!!!!!!!!!!! What difference the numbers on the block, they look the same.............
This is a very interesting story...seems history is being rewritten now with al the 318 hype nothing has changed with them since the 80s IMO but going forward the guys that have them will want $$$ for them now...I used to get 318/904s for the price of a tank of gas...