Been driving the Cobra quite a bit. Overall I'm really pleased how the IRS swap turned out. Since my last update, I ended up getting the ABS sensors replaced (which solved the ABS light), rear 98-04 exhaust hangers installed, got the fluid and FM swapped out in the rear diff, and found some bassani HF cats installed in the x-pipe, because the Borla and OR-X was just a bit too loud for my liking.
Also slapped a canned Diablo tune on it. I really only tuned it because, ironically, after I installed the cats in the x-pipe, the MIL came on for rear o2's. It was just fine when there were no cats, but turned on after. So I put the 91 tune on and turned off the rear o2 MIL.
After a hellish few months of work swapping the IRS in, I'm taking a few months to just drive it and enjoy it.
I'll try to get some pictures up tonight. The rear wheels fill out the wheel wells a bit better.