I've seen in mustang magazines where they sell rearend assemblies and driveshafts. Has anyone skipped the "donor" and just purchased these parts new? If so, how much more do you estimate you spent versus time saved. It seems as if it would save a lot of headache if there's not much of a price difference. Everywhere I look, people think their '87 Mustangs with lowly four cylinders are worth 3 or 4K!