If you want to use a manual rack, use Speedway PN 91034344 or equivalent. The QA1 K-frame features pilot holes for manual rack mounting that must be drilled out. One of the holes overlaps and you’ll need to use a step drill. The manual rack also requires a different steering u-joint to work with the 9/16-26 spline.
Some customers use the power rack with a closed-loop system instead of switching to a true manual rack. The provides the faster ratio (2.75 turns lock to lock vs 3.5 on the manual) without a power steering pump.