Description doesn't help much because he doesn't clarify when he's describing the Saratoga and when he's talking about the Impala. Looks rough and says the price will go up as he works on it. Wants the unusual sum of $5650 for it. It's from Washington, so I'd be leery of all the rusty surprises that thing might be hiding. The Impala he's selling has it's seats replaced so it can be laid out into a bed.... that's his definition of a "sleeper." 

https://seattle.craigslist.org/tac/cto/d/1959-impala-1959-chrysler/6350571354.html