Here's a link to the Autometer -Series guages.
http://store.summitracing.com/default.asp?target=department.asp&d=10&x=16&y=16
The trans temp guage needs a install kit, which is basically a T fitting that you tap into the return line to the trans cooler from the transmission. A temp sensor is available from automer part number ATM-2258 ($13. 95). You'll need some 16 or 18 guage wire to complete your install for all the guages.
The pyrometer guage comes with everything you need to install it. Make sure you buy the one with the thermocouple probe, not just the guage.
The boost guage should come with the tubing kit. You'll need at least 6' of tubing. ATM-3326 ($7. 95) . Again, the guage may come with tubing, I don't know, I bought mine used.
The Z-series guage should come close to matching your guage cluster.
The guages that I suggest you get are
ATM-2615 - trans temp (140-280 degree) $59. 95
ATM-2216 - Boost (0-35 psi) $46. 69
ATM-2654 - Pyrometer (0-1600 deg) (comes with thermocouple probe) $135. 95
The guage pod is part number ATM- 17201. $58. 95
Hope this helps!