Just to be absolutely certain the main springs are too short I would echo Jon (Coopermans) advice on removing dampers but after suspension has been lubricated. I would add grease at the stub axle nipples. The kingpin top bolts may still have the OE engine oil lubrication system but many owners have replaced this with extra grease nipples.
When all lubed do a drop test by jacking wheels a few inches above ground with hydraulic jack and allowing to drop quickly. The car should bounce but note the kingpin geometry causes tyres to squeeze together slightly under compression hence possible need to push the car back and forwards to allow settling and accurate assessment of static ride height.
If rebound spring gap remains similar to your photo it needs sorting. Whilst dampers are off you can check them manually. As a minimum you will probably need new main springs but it's pot luck where that will leave the rebound spring gap if any, which is why the SSL kit although expensive is the attractive option. As it also includes stub axle to spring roller bearings it will almost certainly lighten steering as well.
Look forward to hearing your further findings.
