ARP 771-1006 Metric Thread Bolt Kit M8 x 1.25 x 45 12pt SS bolts ymm_59 and two acoustic reflectors are

and two acoustic reflectors are fitted on the tailpipes to guide the sound into the car’s cabin and change the driving experience

but ECU remapping is not required for this configuration

You should also know that ARP rod bolts are superior to those from other manufacturers

Specifications Socket Size(s) 5/8 12pt Pro Series 200

594˝) Wheel Stud Hole Size - Aluminum Hub 0

ARP 771-1006 Metric Thread Bolt Kit M8 x 1.25 x 45 12pt SS bolts ymm_59 and two acoustic reflectors areSpecifications Socket Size(s) 10mm 12pt UHL 45mm Thread Length 22mm Grip Length 23mm Thread Diameter Spacing M8 x 1. 25mm Grip Diameter 8mm Wrenching 10mm Head Height 7. 4mm Collar Diameter 15. 0mm