So.... to address my sagging rear suspension (90 740 turbo NON-nivomat)
I installed new shocks recently, which fixed the rear ride-height for about three weeks.... then it went back to sagging.

It's been suggested several times that worn springs (and AFAIK springs or shocks are the only two causes for this) cause the saggy rear end.

So, I'm doing a major tune-up and I was thinking that it would be a good time to replace my springs.
I like the ride of soft springs/hard shocks (I put on KYB Gas-A-Justs) that I have now.
There's like a three dollar difference between heavy and standard duty.
I don't normally haul stuff around, but I do keep some toolboxes in my trunk most of the time. They only weigh around 50 pounds all totaled. I also have a full-size mag-wheel spare (I figure that without the steel rim it weighs about the same as the donut did and isn't limited to 50 miles/55mph).

Do I go junkyard for these? Do I get the heavy duty? Will the standard duty really be standard duty, or are they wimpos? These are Scantech springs from FCP groton.
I'll be at the junkyard anyway to get an e-brake cable. I broke the long cable from the cabin to the drivers rear wheel. Not planning on doing the pads. Any idea if pick-N-pull charges more than 10-15$ for an e-brake cable?

Thanks everyone,
Will
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1990 740 Turbo, on its way to stock specs, maybe beyond