Synergy spring numbers

[JTGuy]

I just received my new Synergy 2 inch lift springs today. They are works of art. The fronts have the numbers for left and right spring OK but the rears have the same number on them and apparently to be the same. I think they will ride smoother as they have more wraps of spring in them.
8863 20 02 D passenger front 12 wraps
8863 20 01 D driver front. 12 wraps
8865 20 01. rear both sides. 11 wraps
Got here without a scratch on their perfect gloss black powder coating.
Are these the correct numbers?
careful reading of the Synergy install instructions show the rears to be the same numbers.

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[JTGuy]

Started installing my Synergy springs today. Quite different from the Mopar 2 inch lift springs. The Mopars are tapered spring material at the top end and the material is thinner than the Synergy ones. The Synergy springs have more coils, about 3 more. The free length is the same. Not sure if I should use the hard plastic piece that goes over the soft ride end of the coils. Unless I hear otherwise I will leave them off to allow for full coil action.
Anyone with these coils any info would be nice.