Cal Tracs rear suspension or multi-link suspension kit?

If you're going to set your car up primarily as a corner carver, you're going to have to make some compromises if you also want to take it to the drag strip. If it's primary use is going to be street and corners, then you may just have to take your lumps on your launch at the drag strip. What works best for corners and what works best at the strip are two very different things.

I would avoid Cal-tracs for the street. Multi-link depends entirely on your budget. That will be the more adjustable option if you spring for the adjustable coilovers. A triangulated 4-link isn't exactly ideal for corners or the drag strip, but with some tuning they can work well for either. A 3 link is better for corners as long as you don't have a big horsepower car, but their installation on a Mopar without major surgery is a problem, and that wouldn't be what you wanted for the drag strip either.

You could try running a set of Mopar Performance oval track springs. They handle great on the street, and have a reinforced front section that should help a little with controlling spring wrap at launch compared to a stock spring. Still not anywhere near Cal-tracks or SS springs, but they'll work better in the corners than either of those too. If you paired them up with a set of double adjustable shocks like the Vikings PST carries you could make some adjustments for the street and track.

I run AFCO springs in my Duster, they have the same exact specs as the MP oval tracks. I'm pretty happy with the suspension and it seems to hook up pretty well. But I also run 295's in the back and only push 400 hp or so with a set of 3.55's so I'm not geared to really test them anyway, and I have plenty of rubber for the power I have.