I have a '62 SWB. I was surprised to find a 2-piece behind my sm 420. I am switching to a t-5, and prolly will go to a 1 piece. My worry was the slip yoke. I'm not sure if the flange type is mandatory with a two piece or not. A local driveshaft shop said they would shorten the 2 piece for around 175.00, but I can buy a used 1-piece for maybe 40.00.