I have a 2f motor with a '74 4sp tranny and axles. I want to increase my highway speeds a bit, nothing too drastic but i was wondering if its a good option to change my ratios in the gear boxes. does it work? do i lose too much torque? does it fail alot or is there some big problem? if you can help me out it would be great!! (oh yeah and if you know where i can find out how to do it too...) thanks