Invidia Dual N1 Catback Exhaust Cold Air Intakes It's important to note that

It's important to note that lesser quality studs are not even centerless ground - the material is thread rolled in bar stock form (mostly before heat-treat

Looking at the picture below it's easy to see that our Y-pipe will give perfect charge air distribution

Hole spacing 89mm centre to centre

Fitment Note:

Invidia Dual N1 Catback Exhaust Cold Air Intakes It's important to note thatINVIDIA N1 Y PIPE BACK EXHAUST Full power. Full flow. Full volume. Blending performance and price, the Invidia N1 Exhaust is a modern interpretation of the classic N1 racing style exhaust. Invidia N1 Exhaust Systems feature cannon style mufflers for maximum flow and minimised back pressure, resulting in significant mid to top end power gains. From start to finish the Invidia N1 Exhaust Systems are designed with performance in mind with the exhaust