I have both powertrax and Aussie lockers in the front and rear of my s10. I love them. Though I will warn its definitely not going to be super...
Ooh ooh what the part number??
I just checked the Hooker website. It says the 6102s fit 71-73 mustangs. Are you sure these will fit a 67-70?
Do you happen to have an A9L comp, and wiring harness?