looking to take out my 5 speed n put in a 6 speed. 03 Cr. Dumb question but would the length change at all? im in need of replacing the driveshaft and took my measurements with the 5 speed. where would i go about finding a new or built 6 speed? and while im in there should i go with a dual disk clutch? I do a lot of highway driving n mild towing, but im also looking to upgrade n beef everything up a bit.