looking for some good advice from who knos best and where else to go but driftireland where its tried and tested..

anyways iv a standard rb25det and want to upgrade but for drift use only so need to take all into consideration, planning a nistune possible some injs and wat ever else is needed but the most thing im needing advice on is TURBO.. wat one to buy and where to get it and how much lag but I don't want lag so any advice would be greatly appreciated before we start the slidding again