My family bought a new 1968 firebird in the fall of 1967. It was a 350 4 speed convertible without a posi. After it went through three boys it made its way back to me and it started to tinker with it. I changed the engine and put in a 5 speed. I decided the car was just not getting off the line like it should so I asked my local Tuffy dealer what he would recommend for a posi and he recommended the Auburn posi. It is made close to home so I went with it. Received it in a couple of days and Tuffy had it in in a day (along with brakes all around). It has performed flawlessly and the car is amazingly different. Much more fun to drive! I should have done it 10 years ago. I would recommend it to anyone.

 

G. William Fishering