A steering damper, like is used on VW's and Monte Carlo's. Used to see that problem a lot on old straight axle drag cars. Basically it's a sideways shock absorber.
My truck started doing the death wobble thing. Put a new steering damper on it and it was cured. Very simple setup.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
