i was wondering what kind of coupler or adapters may be needed?
There is a duct clamp on the end of the cone filter that you tighten onto the throttle body
There is no couplers or adapters needed
2000 Grand Prix GT- DIY Spectre HAI, KYB GR-2 Struts, GMPP Front and Rear Sway Bars, GMPP Front and Rear Strut Tower Braces w/ Don Rome Brackets
Soon to be Installed: Poly Bushings + Poly End Links- Front and Rear GMPP Sway Bars