I know it has been a few months since the last post so I'm not sure how timely this will be. Another option that you might consider instead of pods on the dash is to do combination guages in the two main guages. There are a couple of companies that make replacement guages for classic cars that have several options. http://www.classicinstruments.com/ makes a spedo/tach combo guage and one that shows Temp, fuel, volts, & oil that fit into the curent spots for the tach and speedometer. They make them in several styles (from classic to modern) and one should look nice in a C3 dash. Another company called Dakota Digital does a similar thing, but theirs are purely digital displays for an ultra-modern look. Just an idea for still haveing the side guages without adding things to the top of the dash and keeping a more classic look.