scoot302
Active member
- Joined
- Dec 21, 2010
- Messages
- 38
- Reaction score
- 0
- Location
- Northern California
- My Car
- '71 Mach 1
'72 Mach 1
Hi I have a 4 spd toploader with a 28 spline output shaft. I want to put a trac lock differential in. I have found one with a 31 spline shaft. My current drive shaft is 28 on both ends. If I get the 31 differential will I need a new drive shaft or can I change some yokes? Or is it not possible to even change from 28 to 31?