1990 90 engine type(s)?

[conner@ra.cfm.ohio-state.edu (David Conner)]

Hi, especially to those who are familiar with the 1990 90, 5 speed FWD.
I'll be looking at one of these for sale tomorrow and wonder if there was
more than one engine available for this car.  
All I know at the moment is what the NADA price guide tells me.
It shows a five cylinder 2.3 liter with 130 - 164 hp.
Which cars had the higher output engine?  
Was the higher output a 20V or turbo?
Was the higher output only on quattro versions?
The seller seems to know little about the car...selling it for a friend or
something like that.  It has 120k miles on it and they are asking $5000.
Any tips re: options to look for and how to identify them would be appreciated.
You could reply directly rather than to the whole list.
Thanks,
David Conner        maintaining:  87 5KS   (95k mi)
Columbus, Ohio                    89 100   (70k mi)