Not worth it, drop that 340 in the scamp and have at it. That being said, if that dart holds a special place for you (say grandma/grandpa gave it to you) then do the work on it (I'm currently doing this one myself).
nah, he dart holds nothing special, it is just that it is ONE OF 5,052 BUILT FOR 1970.................................................ooooooooooooooh, so rare.lmao