[Blazin_Jason]

I haven't done the upgrade to the 12's myself yet. From what I understand that you need the different spindles to allow for the caliper to mount properly.

Edit: About the rotors I don't know. This is for a wagon up till about 91: Front ; w/ 11 Rear Drum ; Overall Dia.: 301.5 ; Min Thick: 24.5 ; Height: 77.3. This is a newer caprice: Front ; w/ 4 Wheel Disc ; OE w/ Alloy Wheels ; Overall Dia.: 301.5 Min Thick: 24.5 ; Height: 118.1 *taken from carparts.com*

Now what I don't understand is the Height differences. They both have the same overall diameter but a different height? This was the same information I got at my local parts store. If anyone knows what is meant by "height" please let us know.

Jason