[silver91gt]

the senders and the gauges need to be the same brand for them to work properly.


if you talking about the gauges then
the fuel pressure gauge if it is electrical will need a sender that taps into the schrader valve on the fuel rail. then wire it in.
if it is mechanical you cant hoook it inside the car.
you will have to put it on the hood or cowl or something.

for the nitrous gauge, the electrical is the same,
hook the sender somewhere between the bottle and solenoid, then wire it.

for a mechanical gauge you will need some nitrous line and a "t" fitting to tap to the nitrous line.
then route it safely to the gauge.