Brake Fluid Leak problems of the 2004 Toyota Tundra

Toyota recalled my Tundra for a rusted frame. Dealer took possession of the vehicle in April. They provided a rental car, but no other update or contact until a week ago when the frame arrived. Now nearly complete, they want to charge me $8000 for additional parts not covered by the recall which they claim is necessary to make the vehicle pass inspection and roadworthy yet many of these parts were unaffected prior to the recall. At no time did Toyota ever inform us of additional costs not covered by the recall. Two of the items are critical to the value and drivability of the car. They include the rear axle and differential which I believe failed due to the same rusted issues as the frame. The additional parts affected were the brakes. The front brakes seized from 6 months of non use and maintenance by the dealer, the rear brakes were failed by fluid leak from rear axle while in possession of the dealer for 6 months. In short, after getting a new frame, the dealer was holding trying to charge $8000 in extra repairs or they would return me a truck that had a new frame but was still inoperable in the condition under which it was stored by the dealer. The dealer and Toyota were responsible for maintaining the vehicle and returning it in as good or better condition than they received it, but instead it lost 1005 of its value. I cant drive it, I cant sell it. It has a new frame but now has no differential or brakes it has lost all marketable value, where it could have been traded in or sold prior to the "frame replacement" that was supposed to right all the wrongs" of Toyota's doing. I have full service records showing responsible ownership of the truck for the last 10 years. Needs to make it right and fix my truck so I can drive again, or buy me out, or offer me a trade allowance that is fair and equitable. This Toyota case number is 1504140934.