68 Barracuda ragtop rearend

[superbird6bbl]

Does anyone sell a posi unit for the stock rearend for my 68 Barracuda converible, 318, auto? I am going to let my 16 year old daughter race it.

 

[RedFish]

That's probably a 7&1/4 rear end. I've heard there were posi chunks for those but never seen one. Bound to be rare as hens teeth.
Those lil axles are weak as puppy pee anyway. Entire heavy duty rearend will be a better plan.

 

[superbird6bbl]

Thank you.