I have just acquired a set of complete TJ diffs. D 30 front and D 35 rear 4.10 gears....I want to install them in my 87 YJ. Where can I find the right brackets and measurements to do this? I may be able to get a donor TJ frame..would this be the best approach? The TJ frame is bent in the front corner. It would not be a good candidate for use. But all the brackets/spring perches are intact...Any Suggestions???