12" rear brake setup

[505pike]

Hello all. I have an Oldsmobile Intrigue that already has the 12" front brake upgrade and I want the rears to match before I put my rims on. I do understand there is very little to be gained messing with the rear brakes, I am doing it purely for looks. I have already ordered some Baer drilled rotors from a 2008 Pontiac G.P GXP, but I am having a hard time finding calipers and brackets at a reasonable price. I have found them remanufactured for about $170.00 for a single, but have a few questions.
1. Does anyone know if my old brake calipers will be accepted as a core since they aren't the same type of caliper I will be buying.
2. Anyone who has done this swap on the rear where did you find your calipers, did they include brackets?

I read through the "Big Bad Brake" thread but did not find the answers I'm looking for. Thanks for any help!

[AjL227]

1. You have to ask whomever you're purchasing from this.
2. I have GXP brakes F&R, they definitely are worth it for looks alone. I got all my braking components from ZZP, so I can't really help for "on the cheap", but why don't you check out some local junkyards?
A lot of GM big brakes are interchangeable between many models including Cadillacs to Corvettes.

[505pike]

Thanks for the response, I was going to plan a u-pull visit this weekend in search, only problem is the only campatible 12" rear brake swap that I know of comes from the 2005-08 GXP, which my local u-pull says they have none. May just have to spend the $$.

[buickman104]

Car-Part.com--Used Auto Parts Market

[Ridin ON Chrome]

Thanks for the response, I was going to plan a u-pull visit this weekend in search, only problem is the only campatible 12" rear brake swap that I know of comes from the 2005-08 GXP, which my local u-pull says they have none. May just have to spend the $$.

Most of them are gone now and a lot of junkyards miss label them.

I called about 50 yards to find the ones for the Buick. You can find the calipers all day long new on the internet but you will have to pay a core charge and unless you got money to blow. It's really not worth it.

[505pike]

Either way I can get everything I need to $100-150 cheaper than what vendors are asking, and although pricey, I think the rear brakes look terrible after swaping for 12" in the front and I have stock 16" Intrigue rims on, can only imagine with 18"s.