When retrofitting all of the gauges, because it was an LS swap the sending units needed adapters for fit:

        Water Temp - Needed Autometer Adapter 2277 (I had to drill the inside out for the probe to fit through)
        Oil Pressure - Needed Autometer 2268 (Very tight fit...very tight)
        Fuel - (Racetronix 0-90ohm Sender)
        Speedo - Picked up speed signal from PCM (Speedo had to be calibrated
        Tach - Signal from PCM was too weak.  Had to put a pick up resistor in line off a 12+ wire 
        Volts - Just the usual 12+ signal

Gauge Info:

1964 Pontiac Beaumont

EFI / Electrical


Electrical System
- American Autowire Power Plus 13 Wiring Kit
- Oem headlights & Tail Lights
- Pico 55W Driving Lights with Blue LED Signals

Engine Management
    - 2006 Silverado PCM - Blue/Green Connector 
    - 2006 Silverado Harness - 206409 - To be converted to standalone
    - 2006 Silverado Tac Module - 1259008 - TMD1 - 160K1 - 602-053223
    - 2006 Silverado DBW Pedal - 6PV 933 902-06 - PN# 15107594
    - Current Performance SA-1000 Fuse Box
    - HP Tuners MPVI Pro


Fuel System

    - Spectra - Fuel Tank (GM307C) - 1987  Buick Grand National
    - Spectra - Tank Straps (ST06) - 1987 Buick Grand National
    - Racetronix - FPS-G7W255AN - Sender with AN fittings and Walbro 255 Fuel Pump - 1987 Buick Grand National
    - Racetronix - FPWH-006SH - Hotwire Kit - 1987 Buick Grand National
    - Stant - Fuel Cap (10817) - 1987 Buick Grand National
    - 2inch Fuel Filler Hose - Dorman
    - Ac Delco - Fuel Filter/Regulator (GF822) - 2001 Corvette
    - 6AN Braided Fuel Hose with Russel Fittings
    - Russel 644110 & 644120 - Screw Lock Fittings for Fuel Rail and regulator
    - LS6 Intake / Fuel Rail  (GM88894339 / GM2172434) - 2002 Corvette
    - LS1 Fuel Injectors (GM12456154) - 1999 Camaro