That much extra trans length should allow you to go with a 1-piece shaft, but finding one the right length from a year model and trans type reccomendation is like finding a chicken with lips. Get out the tape measure and find something that can be cobbled together, or take the dimensions to a driveline shop and get a custom shaft made. It's really not that expensive. A Powerglide shaft probably won't have the right slip yoke spline and/or diameter. Another option would be to have your front shaft shortened, and install the right slip yoke on it.
Jerry
Last edited by Hotrod Lincoln; 09/12/2010 5:54 PM.
