http://www.aam.com/file.php/255/axle+shaft+brochure.pdf
Is it this simple? 725 - 7.25 IFS
Page 3, enlarge to 100% so you can read the PDF. Item number 5, 7.25 IFS housing shows 3 different carrier part numbers, two are aluminum, one is cast iron. It shows the usage (application as ZR2)
Part numbers listed are OE and AAM.
I have already been told that they brought back the cast iron housing originally designed for the Blazer ZR2.
I have since been told that it has probably been redesigned???
All I want to know is if I were to order that cast iron housing, will it fit and work on my H3?