So I’m switching over my 99 cobra to 4:10s after doing some research I figured I should get a new diff carrier to and have everything fresh but it’s hard to find 28 spline diffs for my car and see people switch over to 31 spline diffs and axles, I also can’t even fine 28 spline halfshafts anywhere, so what do I need to convert to 31 spline, just a diff, gears obviously and half shafts? Are the 31 spline halfshafts 28 spline at the hub or do I need new hubs?