hello , I'm Michael ! I sell 4 pistons 8: 7RV for GTI 16v Turbo engine conversion those are new in box brand JE PISTON Indeed I practice mountain race in Belgium with 6n Polo GTi I ordered the high compression pistons 11: 5 but the supplier is wrong and refuses them take me! this is a common conversion you! if it ever could interest to any of you! thank you in advance contact me : powerman88@msn.com or Facebook Mchael Gego