[1978CobraII]

Well I got my car and found out it's got the 6 3/4 rear end or the 7inch, what ever you prefer to call it. I can't seem to find gears for it to replace my stock 3.18's,or even add posi. Can anyone help me out?

[Stretchmobile]

Forget the 6 3/4 and find an 8" from a v6 or v8 car. Stronger and plenty of gear selection and bolts right in. I found a complete 8" in the local green sheet for $20 with sway bar. Had 3.00 gears. Few weeks later I was at the pick-a-part and there was a 6 cyl. Mach I with 3.55 gears. I slipped on my overalls and pulled the differential on my lunch break. Cost me $35. Put it in and it is great!