Yeah that comment was sort of a "If i had the time and inclination" based off what I know about the 318 and 340, that would be what I'd attack to try and get close to what the 340 is. main thing to me is compression and heads to be able to get it to "rev to 6000 RPM all day long" that comment was was the advertisement on the 69 and 70 340 Swinger LOL!