I recently bought a TF stud kit for the differential bearing caps on my '03 Terminator with factory IRS. Upon installation, I noticed the studs were too short and contacted TF tech support who then told me this kit only works on the iron solid axle 8.8s. The studs have only been hand inserted into the differential case, and were never torqued down. I got the kit from Summit, p/n TFS-85101-1. 4 studs, 4 washers, and 4 nuts with ARP install grease. I'm asking $30 shipped. Here are a few photos of them inserted into my aluminum case:
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