The LD340's a great intake from back in the day. That being said, it's basically a stock '71 340 Thermoquad intake made out of aluminum. It makes good power, and is really good with the numbers and names ground off because it can pass as stock. IMO, there are more than a couple modern ones that potentially would make better power with the right matched components. Think of it as the MP.528 solid of intakes...lol.
