Handling Difference between DSE Speed Kit 3 & Hydroformed Subframe?

[Steve Chryssos]

The subframe upgrade will feel much more like a modern sports car including real world engineering benefits relative to the upgraded sub. …Like improved rigidity, steering feel, anti-dive characteristics, high speed stability, turn-in and more. You can only do so much with a stock sub and stay within the confines of the old frame rails, crossmember and factory sheet metal.

That's not to knock a stock sub with upgrades. That approach works well. But the added effort and expense of an aftermarket subframe swap does indeed bring added value.