[coyled]

The IRS should be better at handleing bumps in a corner. The IRS should also allow you to run some negative camber which should help ultimte cornering as well. The IRS with strong enough parts would be the way to go. I have seen some well set up live axle cars run well on a road course. To do the live axle right, you would have to go 3 link and eliminate the c clips, bearing carrier to the hubs. Good luck, Scott.