I upgraded my speakers about 3 months ago and I put 6.5's in my doors and 6x9's in the rear. I ordered mine from crutchfield so they sent me the necessary bracket to fit the 6.5's in the door. To fit the 6x9's some suggest just using the regular rear pods and just dremeling them until the 6x9's fit but i didnt feel like going through all that so I ordered the pods from ms recycling. FYI I had 5.25's front and rear and had no speakers in my dash in my 97 RS

Toney
'97 RS 5 Speed (totaled)
15.4606@88.42 Mph
96 Toyota Celica GT
88 Toyota Supra NA-T (w/ sports package)
Got Boost?? Hell yeah I-6 turbo powah baby!