Need to find mods for the 03 rear end
 

My Cobra likes to wheel hop at the track.It still ran 12.7@114.9 but first was a waste of time. The rear wheel horse is 470.89 489.97tq.Ive modded the live axel cars plenty but im kinda lost with this. I jacked it up today and took a look. By the way what is the biggest tire that fits under these?

RE: Need to find mods for the 03 rear end
 

The IRS will always have wheelhop... If you replace all the bushings you can help to reduce the wheelhop but that's about as much as you can do. If you get too much wheelhop you'll lose a halfshaft... and it will be cheaper to buy a solid axle from a GT than it will be to replace the halfshaft.

A 315 width tire should fit, not sure about wider.

RE: Need to find mods for the 03 rear end
 

Drop in a solid axle, you will be glad you did. Also, you can sell your complete IRS setup for quite a decent amount of cash.