Only other thing done to my car to "assist" the Cal-Tracs was to tie the torque boxes in to my subframe connectors so the forward spring mount doesn't get ripped out the car.

I am sure the Irons' suspension works very well, but for 3 or 4 times the cost of Cal-Tracs, I wouldn't even consider it. Even after you buy the whole Cal-Trac setup (springs, bars, shocks) and reinforce your torque boxes...you are nowhere near the cost of the Irons' kit. I don't think the Irons' suspension would be legal for any stock suspension classes either, that's something some people may need to consider.
Don't get me wrong, I'm sure it's a nice kit and works well, but for the money... I'll keep my Cal-Tracs for a street/strip car.

If you're considering doing some corner carving or want it to handle better, then by all means, the Irons' kit may be for you. If you're a stock suspension racer, or do more strip than street driving, stick with Cal-Tracs. CHIP