See diagram above in pictures Spicer 1310 Series U-Joint (TD-329) Fits: GM TH / Turbo Hydromatic / Turbo 400 / 4l80E & 4L85E Muncie M21 & M22 Borg Warner Super T10 This is a NEW 31(in yoke) based on 32 Spline(trans output) GM Slip Yoke. This Popular GM Transmission Slip Yoke is 5.5” long. It uses a 1310 (369) Series U-Joint (outside clips 3.219(3 3/16)" wide & 1.063(1 1/16)" caps). This Slip Yoke comes with a 90 day Warranty. Warranty valid under normal use only (racing, engine modification, suspension alteration ect.) will void warranty. If you have any questions concerning our products, please message us directly through Amazon and we'll be happy to assist you!