Sorry for repeat - new to list and did not find info in archive relative to question.

I currently own a '87 GL Westy (156K, rebuilt eng. 25K ago, very clean) and am contemplating upgrading (?) to a '87 Syncro Westy - original owner (an acquaintance), 140K, 5 sp (were they all?), Locking diffs', clean interior etc....

1. I do most of the work on my '87, how different am I going to find the Syncro?  
2. What do I need to pay attention to when scoping the vehicle out and negotiating a price?
3. Realizing market values - what is a fair price range for the vehicle - and a fair sales price for my vehicle?

I live in the mountain interior of Colorado, and have "made due" with the rear wheel drive, but would obviously benefit from the Syncro option.

Thanks in advance,

Chris
Telluride, CO
'87 Westy
'73 Commando