Congrats. It looks good in Sterling Gray.
I think he would know the difference between the 4.8iS and the 4.4i, especially on the paper work. The PO must have spent some $$$ to make it a 4.8iS copy if it's indeed a 4.4i. The picture with style132 suggests that it is a 4.4i to me.

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00 E39 DINAN S1 //M5 (82k miles)
06 E53 DINAN 4.8iS, born 2/18/2006 (126k miles) http://www.xoutpost.com/bmw-sav-foru...s-my-dslr.html
90 Straman Z32 TwinTurbo Convertible, (1 of 44 ever made) 5 speed, 444rwhp/451rwtq
01 360 Novitec Spider F1 (26k miles)