Hi,I am novice T owner( Model A project mainly at this time)I have a 26 TT steel cab with worm drive that I also am working on.My question is I have a complete Universal rear mounted 3 speed auxillary transmission ready to bolt in(with all modifications done ,shortened driveshaft and torque tube).I also have a Ruxstell 2 speed rear end.I was advised to install the Ruxtell also ,which I don't think I need,because I will have 6 forward and three reverse speeds.Is this correct?Thanks for your advice Doug