Because of popular demand we now have the 3"- 4" (for factory turbos) and 4" (for most aftermarket turbos) silicon joiners separately from the Air box and battery relocation kits for the falcons.
Great option if your upgrading your turbo and require th bigger 4" inlet silicone
They will also come with hose clamps to fit right into the car and comes with the original "mackielec" logo printed on them.