Ironic story about the LD340 no longer being allowed ... one of the biggest critics and lobbyers about its use , a true bow tie guy actually let me use his shop and helped me change a motor in my Dart years ago as At the time I had no place to do it. He has worked on several Mopars he isn't anti- Mopar just a Stock purist. He has helped a lot of racers and has built some really good cars. That being said I m sure there are plenty of questionable parts in some of the fast GM cars also. I can see allowing aftermarket heads and blocks , trying to find a 340 block that passed a sonic test was quite a task years ago as well as finding an X or J head that wasn't cracked. Great to see guys putting the " R and D into these combos , mid Tens and high Nines out of a 340 is downright awesome and impressive.