Congratulations. Love this car. Had a Sierra (non Turbo) for 10 years (waiting for the Safari and some Vitamin M
).
No car like a Sierra. The suspension / seats / AC all superb. In fact with the Turbo Model TM removed the one major grouse i.e. the power.
Do get your engine checked for blowby since you mentioned that it has already clocked 160000 Km and do post some pictures of the car both exterior and interior.