Value of a 340

they are expensive because of the low number of them that still exist,i bought a bare standardbore block with a crank for about 1000 $ wish sucks bigtime but i already had a complete 340 with a broken block and a hurt crank and didnt want to need to start all over again with a 360 and i realy needed the forged crank also,then i changed the whole plan to go supercharged so i feel just alitle stupid now....