Congrats. It reminds me of the first bimmer I have too, except mine was an AT.
I thought all MT E53 comes with sport pkg, maybe it's just for E39. The amber signal and side marker indicates no sport pkg on your E53.

As advised, do not put the cheapest parts on your bimmer. They won't last.

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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)