so yea.
i have 91 n/a coupe and have vented rear brake rotors which means, i have auto adjusting suspension, acording to auto value...

but im prettttty sure i dont have aas since there is no actuators and a little switch for it. So acording to auto value, i should buy the solid brake rotors... but the ones i have on now are vented ahhhh what the fff

 

I had a 90 with AAS and it didn't have vented rears.

 

91 was an interesting year. they had these "option packages", and there were only really 3 models, the coupe, the turbo, and the vert.

i believe the 4 piston fronts and vented rears were a package option. you probably also have a rear wiper and power sunroof.
more importantly no 91 model came with auto adjusting suspension.

well, in any case if you want to replace the rotors, just buy the vented ones.

- Aaron

 

k thanks guys