TurboDirect S.A are designers of the industry leading bolt on swirl adapter, this adapter is made form Stainless steel, investment cast to perfection, and CNC machined to accept any Vband turbocharger with a 76mm flange face, EG Borg Warner EFR series, Garrett GTX Gen1/Gen2 series, G-series etc. The Swirl adapter is designed to increase flow and air velocity entering the adapter, to minimise the spool time for larger turbocharger builds. The Swirl adapter will allow you to run a larger AR turbine housing and still see the spool characteristics of a turbocharger with a smaller AR turbine housing.  The adapter will allow the connection of up to a GTX3584RS size frame turbocharger or G35-1050 under the hood of the Golf7R with more than enough space between the turbocharger and firewall - when using the adapter with a counter rotation turbocharger the geography inside the bonnet is minimised further and the oil drain much easier to make up due to the higher turbo mounting position.  TurboDirect S.A - leading the way while the rest just follow. 

https://www.youtube.com/watch?v=y6PA_Xc0feI&t=568s