Link to the Carrier in question:

http://www.reiderracing.com/danapowrlok.htm

Its an original Dana Powr-Lock. Cost is $400.00 This means, you can replicate the Jack Clifford hop up of using a Studebaker Twin-Track (Its actually the Dana Powr-Lok) with the rear ratio of your choice, which is also Dana original gears @ $159.00. By using a 19 spline carrier, you can get up and going with your original tapered axles and be able to switch to the Fairborn flanged axles of 19 spline later. Or, all at once. You will also have to buy a new pinion yoke for the finer pinion splines produced currently. Dana Power-Lock = $400.00 Dana Ring Gear and Pinion = $159.00 Dana 44 Overhaul kit = $100.00 New pinion yoke = $30.00 For $689.00, you have a posi-traction Dana 44 rear end of the ratio of your choosing. That you can also update with flanged axles for and additional $495.00. If the flanged axles are a bit much, you can run your original tapered/hubbed axles. If it was good enough for Carroll Shelby - I think it will hold about as much as anybody here is going to unleash upon it. and the good thing is, nobody will be able to tell anything about it - Its all Hudson from the outside with no fuss in the swapping. Mark Hudson