AFE: MACH Force-Xp 3" to 2-1/2" 304 Stainless Steel Cat-Back Exhaust System Porsche 911 Carrera (991) 12-16 H6-3.4/3.8L 3rd Please see the link below

Please see the link below for a DIY  guide:

and quiet operation

BMR Suspension’s SB009 sway bars are available in black hammertone and red powdercoat for long-lasting good looks

Black anodized aluminum coil cover

125-SJ 453 190 643 U14143 SBC   6

AFE: MACH Force-Xp 3" to 2-1/2" 304 Stainless Steel Cat-Back Exhaust System Porsche 911 Carrera (991) 12-16 H6-3.4/3.8L 3rd Please see the link below3" to 2 1 2" 304 Stainless Steel Construction: This cat back exhaust system is constructed of 3" to 2 1 2" mandrel bent brushed finished 304 stainless steel tubing for maximum strength and durability. This system weighs in 20 lbs. less than the factory exhaust. High Flow 304 Stainless Steel Mufflers: This system features high flow 304 stainless steel polished mufflers, producing a powerful sound. The mufflers has a polished finish for ultimate