I stand behind ANYTHING I design. I will warranty them for 1 year of whatever you can throw at them. Your stamped steel arms are toothpicks compared to this design.
Here is a link to the Bump steer kits I designed for these cars. There is a simple strut tophat and X-member spacer version and Then I designed these arms to drop 1" and use the Tie-rod conversion parts to drop at the steering knuckle. Your spindles have to be drilled and REAMED to accept the 5/8" drop bolt (High Tensile strength) that accepts common 5/8" heim joints and uses INEXPENSIVE Toyota inner tie rods.....
X-Member Drop Down & BOLT-ON BUMP STEER KIT