Lol, glad it helped, although I never thought it could be used as a teaching aid!
I add ratios for any car I have or am thinking of getting. Then, I add any ratios people submit. However, the ratios have to be
tooth counts of the two (or more) gears, rather than the final ratio. Posted ratios are typically rounded and introduce errors in the final calculation. So, I use the tooth counts, do the math (keeping high precision), and only round the display value. So, if you have any of that info, feel free to post it!
And as a side note: I am currently working on another similar project for Mike, so any additions will help him in the long run as I will be borrowing much of the data from my site.