Interesting query though. Having just bought a near-vintage F172 G (1965 model) I'd be interested in finding some info on the web or elsewhere about the different specs of each model - if only to see how mine compares to more recent ones.
Anyone had experience of the older C172s ? Mine has a 6 cylinder RR O300-D, which runs smoothly and seems OK, any pearls of wisdom on weak points of the aircraft/engine?
Ta.