I don't think that information is on HazzardNet, but we had a member looking for a Vance doll in a 2012 thread, and that contains a link to an article at megomuseum.com which gives very detailed descriptions of the various Dukes dolls. It includes how they just made new heads for Coy and Vance and stuck with the original Bo and Luke packaging.
If your talking about the Buck 120 General, as far as I know that was the longest fixed blade style knife Buck made. A very close runner up would be the Buck 124 frontiersman. If it is the model 120 General, I believe buck still make em. I might have to get me one, I have it's little brother. The Buck 119 Special.
Hey! You never even mentioned anything about me being back....in " The Moonshine Mauler"!! LOL! ( I'll be looking for you boys this summer at the Moonshine 400! )