Front brakes from a 2006 GP on a 2003?

[thatgtpguy]

would the 2006 impala ss Rear brakes work I understand that the E Brake wouldn't work but I have a solution for the E Brake

 

[matt5112]

Rear gxp setup uses your existing ebrake setup granted its a 1997-2003 gp its going on.

 

[Kilroy]

If you go with a rear GXP setup, don't you then need 17" rims?

 

[Fivefingerdeathpunch]

No, only for front brakes.

 

[Kilroy]

So how much better would a rear GXP brake setup be over the stock 2003 GTP setup?

 

[231FUN]

So how much better would a rear GXP brake setup be over the stock 2003 GTP setup?

Theres not really much need to upgrade the rears if you've done a front brake upgrade, fronts do most of the work.
Replace pads and rotors in rear if need be and bleed the them and you should be set if you've done a front upgrade.

 

[l67ss]

As to the comment about braking is all about pad surface area and not cooling i hav to disaggree if that was the case wed b running 4wheel drums cooling is a MAJOR part of braking plus theres the whole leverage thing