If you ask renault to check their records - they would probably know - you would need the vehicle VIN number and possiible the engine number. What age and how many miles are on your vehicle and is there any warranty still on it. Uprating an engine with high mileage is likely to cause severe probs. From what I hear uprating will increase fuel consumption considerably. You get nothin for nothin in this world. If still under warranty you will invalidate it and do you plan to tell you insurers - if an accident occurs and they find out they will walk away laughing - leaving you to pick up the pieces.
Yours is right on the change over between the old shape and new shape(large ar$ed!) version.Which do you have?.If you can find the engine code (F9Q or similar) it would help us indentify which engine you have.