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.
I've had my heart set on a twin turbo upgrade from my GTRS to 2835s. However, HKS recommended, in fact strongly suggested a T04Z setup instead. Problem is that at the time I was going for the 2835s, the T04Z kit sold...