shift lights are universal, you can tap your tacho signal from either the ECU (EFi) or negative ignition terminal (distributor). Of course the ECU is normally cleaner.
I'm running on a carb myself and if you can run a tacho, you can run this.
bro...i`m planning to buy an rx8 but i had a lot of rumor that rx8 consume high petrol just like GTR but not as powerful..!! that make me so sad...so can all bro who using rx8 here can tell me how much is the full...