[saand]

Im interested in regearing my automatic transmission.

obviously going to a 5 speed manual would be ideal but that is a big change and im trying to keep the cost down and effort down for changes. I figure i may as well just get a new car if i get to the point where i have to go to a manual.

Anyway as i am stuck with an auto i am interested to know if anyone has or knows how to regear a auto transmission so that i can get lower rpm when im running at 100kph.
Ideally id like to be able to go to the junk yard, find a suitable car with a taller gear that will work in my transmission and swap it in to my transmission.

I have no idea how to get any info on what cars use similar transmissions to mine or if any others have taller gears, i wonder if anyone can point me in the right direction for this sort of information. i am driving a mazda 626 91 GD auto.