Value of a 340

I own a /6 for fuel economy, I also have a 360 .40 over at a 406 in my garage, I went with this because I could not find a 340 long block that is left at stock. If you go 340, I would recommend the T/A set up with J heads or X heads ported, bore it .30 over, any more and you could have some wall issues, go with a purple crank and a high comp. cam set up and find the rods that are over $100.00 each (I cannot remember the name of the brand) some dome pistons and race valves a Six pack carb set up and you could have something that no one wants a piece of on the track..