It's important to listen closely for a chain noise incase the EML light could of been reset & it's not present on the dash at the time of viewing. What does concern me is on the 3rd photo of the dash clocks no time is present but on the other one it says 3:24 am, kind-of a strange time to be out taking photos, but none the less the time is showing. The Cruise control light is on too, but that could mean it's still switch on. My point is could the milage of been tampered with? I have heard you can only add miles not deduct them from the system, but who knows?
Just view the car as a dubious one for now.
The thing with these timing chains are the attention to oil changes. On Saab's version of this engine 2.8T the timing chain was updated in 2007, also the service oil light was reprogrammed to come on if the engine thinks the viscosity of oil is degrading. The light could come on at as little as 3,000 mile or 15,000 dependind on the engine's use or how it's been put underload, i.e if you do little miles on cold days the oil will need to be change more often. High mileage driving can see out the oil for a longer period. So ask questions about the cars use as i've already mentioned