Hey i have a mechanical 2 5/8 water temp and oil pressure gauge. water temp comes with everything 35$, oil pressure u need teh sending unit supposedly 20$.
If you car are local or want to drive, i will sell u my nismo 555cc injectors if u swap mine in for ur GOOD (370cc) ones and but you also have to purchase and swap my jwt ecu that is programmed for 555's intake and exhaust. This will be for 750 which includes the 555's and the JWT ECU.