Wiring the VX dash into your VP if you dont have a VX style engine is not really worth it... Problem being that VT series onwards dash's use serial data to transmit the signals needed to control a lot of the the dash.
there are only 20 wires to the dash
very easy to hook up but you would only get the basics to work
tacho
speedo
indicator lights
but you will also need to wire in a diagnostic plug so you can try and program the dash .. as you will have a lot of errors with it.. airbags, fuel level sender , traction control etc...
have done 3 of these into older cars and have come up well but thye have all been running LS1 engines and we have also wired in the BCM etc... for security and so forth
to check these out goto
Sideshow's Performance Wiring - Sydney Mobile custom electrical holden ford toyota nissan automotive diagrams download - Home
we have done the GEN 3 LS1 Red EH in streetmachine and just finished a rodeo with dash...