I have this in my X, they only "recline" around 15 deg.

Hardly "reclining" in my book.

I think most who want this option think they go way back.

RealOEM will have the parts lists for both styles.

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'03 X5 4.4 Sport, last of the M62s (8-03 build date)
I believe in deadication to craftmanship in a world of mediocrity!