Any year MarkVIII will work, but they are all open diffs, so you would need to get an IRS trak-lok unit. For cobras, any 99-04 housing will work, but 99 was the only year that had the 28 spline axles, which you need, so if you get an 01-04 cobra housing you will need to replace the spider gears with 28 spline IRS trak-lok ones.
no so id need different gears ?
it says 28 spline mustang so i was thinking cobra 99 28 spline irs
is there any other mustangs that have 28 splines that arent irs
I can machine the side gears for you, but IRS gears are IRS specific.
Alan
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