340,to stroke or not to stroke

That LD4B intake isn't a really good choice for either a 340 or 360 engine, stroked or not. It's really going to hurt the breathing and fuel distribution in either engine. As far as your original question, "340, to stroke or not to stroke", I'm not going to offer any insight because I'm asking the same question about my 360, and I STILL haven't come to a final conclusion. It would be rather foolish to offer someone else advice on the matter when I'm still standing firmly on the fence myself. Good luck. :)