I think you're mistaking the 2 pot with 4 pot. 4 pot looks like it has 2 round cylinders on both sides the caliper.
it's 2 pot's per pad.. so there are 2 on each side..
hope this helps..
supraTT has 4 int he fron and 2 in the back. i believe.. i'll have to check it tonight.. but i'm prett sure taht's what it is..