i have an 84 GP and want to up grade the rear brakes. already looking at upgrading the front to LS1 but need to know what parts i need for it. as for the rear i want to go with disc. want to know what parts i can get off what cars to make this happen. i not looking to spend big money on the kits. also i was thinking about swapping the rear that already as disc from an f body but dont know about the width.