Autometer is a good place to start. Way down the road when I have no other parts to upgrade I may update mine. I'd like to see a speedometer w/tach in one gauge, then fuel/gas/oil/voltage in the other gauge. That would free up the 4 spots on the side for trans temp, vacuum, oil temp, and something else in the last one.
Link below and select a series. If you do an LS swap, you can create your own gauges with an OBDII adapter and a phone/tablet if you wanted to.
There's also a post about retrofitting camaro gauges in these and looks very nice.
http://www.autometer.com/
