You will have to get a 3 series carrier to change to 3.55 gears.Hi everyone!
Is there a good kit to get for rebuilding my 1970 12-bolt rear?
I currently have 2.73 gearing and want to step up to 3.55!
X2. I got my 3.42 gear set and installation kit from Freddie along with a Lock Rite unit to make my open rear posi.Find Big Gear Head (Freddie). He can get you everything you need, good parts, reasonable cost.
If you want posi and changing out the carrier you can just get a posi unit I think.
I got my 3 series carrier from TC member TLowe.