Keep hearing about frame twist with 440s

I installed DIY frame connectors (1x3 steel rectangle 14G iirc) on my 65 Barracuda, just cut and butt welded to torsion bar crossmember and rear spring hanger subframe--on a level garage floor-- and i can jack the front wheel off the ground and the rear will come up the same height. Before it was 1-2 inches deflection. Feels and sounds a heck of a lot tighter on road too.