89 limited slip Ford 8.8 IRS swap help

This is true, but what about other more worthy upgrades? Leaf springs work fine bro. I'd dump money into the front end first.
I don't have much $ in the rear at the moment and I have another thread open for the front suspension. Been discussing pros and cons of different systems. After taxes comes back I'm going to buy a t56 or tr6060 or the front end. The plans I currently have are going to require a custom driveshaft so I'll have to get everything together before I can even think about getting this car back on the street. Also destroyed the 7 1/4 currently in the car with my engine rebuild and an ignorant decision in my old high school parking lot (that's when I parked the car for a ground up restoration and modifications).