I know very little on 12 bolts.
Sold a 4 series posi unit to a guy and now hes complaining that its a truck posi unit not for a car.
Whats the difference?
I was thinking that if you said its a 4 series one would assume its from a truck,
is that true?
I was thinking that the 3 series was car 4.11 and 4 series was truck 4.56,4.88.
Wont the 4 series work in a car rear end with a spacer?