k3500 duallies (1991 and older), what transfer case?

[NJBLZ]

I'm looking at some duallies on ebay, in the mid 80's to 1991 range. Did they come with 205s or were 208s posible also?

thanks

 

[atho]

205's

 

[grd2go]

Most came with 205s a few had 208s and the late 70s ones had 203s also...