Thanks for the quick reply, It reads 760 '90 with a black marker written on the cluster, and the 80 litter tank was present so it is a '90 turbo sedan- it is pretty close, the only difference that I know of is the clock controls- on the '89 it takes a while to adjust the dst or clock, as the hands rotate with one speed, on the '90 + hands have a fast speed- once you hold it down it picks up and they roll faster, I like it better, but everything else looks exactly the same there.
Thanks,
Alex