700R4 and a NP205 in a 78 K10

[Ziptar]

Originally Posted by Russell

Do you really need the NP205? Why not go with an NP208, its a lot cheaper, and should be plenty strong for what you want to do. Half the trucks in the mid 80s got 700r4/NP208 combos, so they are pretty common

True, mostly like the 205 because of the gear drive. Chains stretch over time.

I edited my post above with some info I found. It's not a bad swap looks like. The 208 might not be a bad idea, still chain drive but, lighter than the 203 and 205 and would bolt right up to a 700R4.