i been running z1 motorsports 15mm stud replacement in the front and 20mm bolts on in the back. no vibration nothing. car drives great. i drive like i stole it all the time. so far so good. i installed the rear myself since it was bolts on but i paid a mechanic here in dallas (FQmotorsports) $90 labor
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Stillen G3|Berk HFC|Top speed pro1 exhaust|Bc Br coilovers|SPC camber & toe|Evo-r fog light|Gtr start button|Z1 15mm&20mm spacers|Blue led all around|Plasti dip fangs, diffuser & emblems|35% tint|Redline 75w90|Motul-85|Eibach sway bars|
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