Would a 3/4 ton drive shaft from a k20 work on k30? how about a k10? any difference in the connection of the yoke and splines? how about the length? The reason I ask is this: I could take my drive shaft in and for around 40 bucks have it rebalanced, or I could go down to the junk yard and pull a shaft off a similar truck to mine for around 10 bucks, but it might not be from a k30 specifically. Would it work or would it be a waste of time?