Keep reading. They used the LD340 in tests 2A and 3A. The reason I bought these issues was because it was the first time the LD340 had ever been mentioned. I used to have one ~2005 and sold it before I ever used it. Recently purchased a mint one. I have a 340 / 4 speed Duster I want to use it on. Good to know it’s 420 hp capable.