Steve, for the Koni you show but don't mention, I have listed #82V1680-SA2 (frt) and #82V1685 (rear) with unknown spring strengths. Dunno what length spring is needed either. These are rebuildable and adjustable for rebound damping.
Pretty easy to check spring strengths at home even though I didn't do it in this case:
1- Put spring in hydraulic press with a bathroom scales underneath and a 2x4 on top of spring. Zero scales.
2- pump press so 2x4 compresses 1". Read bathroom scales= spring strength.
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