An update so far: I picked up a set of SpeedHut electro-luminescent gauges (
http://www.horsepowerfreaks.com/part...e_Replica/6508) because I could get them in white on black. Unfortunately they didn't seem to fit, but while I had the cluster out I noticed that some of the bulbs that illuminate the cluster had orange "condoms" on them- I guess to get all the dash color the same. Anyway, I removed them and now the numbers are light orange instead of dark orange/red and much easier to read.
I'd still like to replace the faces entirely if I could. Has anyone managed to get them off? The gauge pointers have to come off to do it, but when I pried gently on the pointer hubs they didn't seem to want to go, and I didn't want to break them.