Here's a link to a chart with some statistics:
http://forums.maxperformanceinc.com/...ictureid=13515
It was from an old website called TransAm World. Not exactly the specific data you asked for, but maybe you can glean something from it.
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1969 Firebird Convertible 400 Ram Air/HO (WQ), 4spd (M20), saf-t-track, hood tach, A/C, P/B, P/S, AM/FM Stereo, P/A - (24 options on the PHS)
My album:
http://forums.maxperformanceinc.com/...hp?albumid=665