$400-$450 max, they can be worth more depending on condition. Someone looking for a nice '68 340 passenger will pay as much a $250-$300. The driver's 340 (72/73/74) sell for $150 -$225 in good condition. Unless you're buying it off of ebay in which case the sky's the limit.
For example...I sell the 70s 340 driver paired with the "machined" 360 magnum passenger for $325 plus shipping. They come sand blasted, and painted with high heat paint.
Treblig
