If you happen to have a copy of either FS9 or FSX, try these guys :-
http://www.simflyer.net/gpx-sx.html
Just shy of $23 gets you a whole feast of gauges, whether or not they replicate the real thing is unknown; haven't used either, so cannot say anything (just a very very very low hour ppl student).
Pay your money, take your choice etc.
Hope this helps...