I was trying to keep my original springs but, the HD's raised the front a couple of inches. The rear was not too bad but, the rear was lower than the front.
I end up buying used HR's, less than 4 months old, from a member in this forum. Thank you!
I like the way my car looks now with 1 bump spring pads at front and 3 bumps at the rear. The Bilsteins sports are shorter and for what I read, some people had problems (too low) with the HR's and the sports combination.
If you want to keep your springs, the comforts may be a better choice with 1/3 spring pads.
Good luck!

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J.H.
'86 300E