I looked for a decent 85 to start with (I wanted EFI ).Up here the 85's are hard to find in decent shape so I looked for newer.I ended up with a rough 92 xtra cab that was perfect for what I wanted to use it for.I think a SAS conversion is the way to go because you will have to add most of the same parts to the older ones any way .If you want a straight trail rig that you don't have to drive to far to the trails and the older ones are priced right that also is somthing to consider