Chances are your gonna have to get one a little longer and have it cut to the proper length.I Had one done for my 55 2nd,and the guy who cut it down told me exactly how to measure for the length I needed.Go ahead and install the engine,tranny,and rearend then find a good shop to do the modifcation to your driveshaft.Your chances of finding one in a wrecking yard that will bolt right up are slim.