speaker sizes on a '90?

[Supra5MGTE]

Crutchfield says tha i takes 4" speakers all around. That doesn't sound right to me. B/c my '84 takes 4" in the dash and some 5x7's in the rear. I thought the MK3's took larger speakers?

 

[oneandgone]

4 inch is right. The 90 also has 2, 3.5's in the back by your head.