Join Date: Nov 1999
Location: Forked River, NJ
All things being equal, the solid axle is easier to launch, weighs less, and costs less to setup.
But, it is possible to get 1.7 60's with 17" DR's using the IRS, if it's setup correctly, I've done it.
In a drag only car, I'd go with a solid axle, but I enjoy all the capabilities of my car, and the IRS made it a better car.
p.s. I probably wouldn't have swapped in a T-56 either (weighs more), but it also made the car much better overall.
98 Laser Red/Black Cobra Coupe (T56/IRS)
12.483 @ 110.94
95 Pearl White Thunderbird SC 5spd
12.879 @ 106.66