What's a good cam to hit low 12's

My 70 dart went 12.8@105 with unknown cam, stock block and heads, 670 street avenger, TRI step headers, 904 trans with stock slant six converter and 3:55 with locker and slicks.

I have a 750 double pumper, 3000 stall converter, and I'm getting EQ heads. What would be a good cam choice. Thanks

A question if I may?
Do you drive that on the street with the powertrax locker in it, and how does it act in your opinion.
I have been thinking for quite some time that I might put one in a 8.25, and my car is pure driver (no racing) but I do drive it in the rain and snow.
I am very familiar with steering with the rear end.
Thank you.