Kansas Bu Wagon said:
No I do not. The IRS is something I always wanted in my car. It is out of a C4 Vette. Surprisingly it fits naturally under the car. That being said this is not a simple project. I had to do a lot of calculations and the rear frame had to be completely changed and modified to make it fit. Project took myself and a fabricator friend of mine about 3 months of weekends to get it all fabricated and in. There are other IRS systems that may be easier to fab in because they are designed to be customized or were more modular from the factory.
I chose the Vette for a few reasons.
1.) it was GM so no fancy adapter parts to fit rest of power train.
2.) I wanted to be able to get parts from local parts store not a specialty shop.
3.) the Vette rear has same bolt pattern as Regal so no odd rims needed.
4.) C4's have a good aftermarket supply.
Here is a couple shots of frame and torque bar:
