Factory style spoiler in the link provided = acceptable
If you buy either of the other 2, you need to be shot ... in the head.... twice.
Stillen discountinued their line of spoilers, correct?
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1994 HJ30 Maxima_Titanium Edition
VG30E, Auto [233'000KM]
Daily -> Epic Future Project
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1988 CA31 Cefiro_Sport Cruising / Almost ready 
RB20DET, 5 Spd Manual [92'000KM]
HD Clutch, Nismo mech. 2 way