I just picked up 2 axels, calipers, discs and brackets from a fellow TR bud. He says they are out of a 93 cobra. They are 4 lug. What else will I need to do to have these work proberly? Do I need to change master cylinder or valve below it? Thanks for the input. I will post pics of the stuff shortly. I am putting tem into a 90 notch with an 8.8 rear.