89 limited slip Ford 8.8 IRS swap help

I've done it in a '66. Here's a series of articles that I wrote on the project:
https://dartslantsix.wordpress.com/2014/06/27/1966-dodge-dart-irs-project-part-1/
https://dartslantsix.wordpress.com/2014/06/27/1966-dodge-dart-irs-project-part-2/
https://dartslantsix.wordpress.com/2014/06/27/1966-dodge-dart-irs-project-part-3/
https://dartslantsix.wordpress.com/2014/06/27/1966-dodge-dart-irs-project-part-4/

The entire subframe won't work for a number of reasons that I talk about in the articles. Not sure how good your fab skills are, but it is a lot of work. It took me about two years to get everything working. Good luck.