Greetings, I recently purchased a 1965 coupe with a 4 speed manual transmission. While driving the car it seems as though it want's another gear while in 4th. Is it better to change the tranny to a WC T-5 or find out the gear ratio in the rear end and swap out the rear end? If changing the transmission is the best option what should I expect to pay for a used T-5? Are there any particular t-5's that I should be looking for. I have no idea what the final drive ratio is in either the tranny or the rear end. I'm not believing the door tag as many of the parts on thecar not original. Thanks in advance for any suggestions. I'm liable to be spending a lot of time here as I have not worked on a car of any kind for quite some time. Cheers.