Hello, and thanks for allowing me to join this forum! I own a hot rod shop that deals mostly with American musclecars, and I'm glad to see a foum dedicated to IRS installation and modification. I am currently working on a 1972 AMC Gremlin "X" with my son, which will be powered by a 5.7 Gen3 Hemi with a T56 Magnum 6 speed. We purchased a Control Freak bolt-in IFS unit for it, since handling is going to be a primary focus, and the Hemi doesn't leave much room for a conventional steering box, but debated for a long time over what to do with the rear suspension. We considered the typical 9" Ford rear with a triangulated 4 link, or even a 3-link, but decided instead to go with IRS. A friend was replacing the Dana 44 center section and bat wing in his twin turbo Viper with a 9"- based center about a year ago, and offered it for sale for a decent price. I had bought it as a possible upgrade for my '81 Corvette, but considering the narrow bat wing and strength decided to use it in the Gremlin. We had no hubs or suspension, so I then purchased a complete, low mileage C4 IRS (Dana 36) from Carroll's Corvette (only about 20 miles from my shop). I worked out the basics of the swap on Thursday, after the C4 rear was purchased, and then while doing research later, found out that someone had done a similar swap on a BMW E30.
Our installation will be very similar to it. I have lots of car building experience, but I have never dealt with anything but repairsrebuilding of IRS units. I have a lot to learn regarding the geometry, and I'm hoping that some of that type of information will be found here. I plan to search here first, but if anyone can suggest other sources for that type of information I would be very appreciative.