78 k20 np203 and concerns about noises

[cadillac_al]

If you ever try to drive a 205 in 2wd with the hubs locked on ice or snow you are going to find out how nice they are.(crap) I agree they are probably better for rockcrawling. I have never broke a chain in all my hard driving but I hear it happens. In any case used ones are very cheap too. I would never downgrade to a part timer unless the 203 was already broken. Bthomas should have many miles left in that truck.