Not a LS - but I tried a Cardone in my 1991 Cougar; it lasted about 10,000 miles, one year that year.
I then installed a RackDoctor rebuilt unit - it's got over 100,000 miles on it and still going strong.
YMMV of course.
Disclaimer: Unsatisifed Cardone, very satisfied RackDoctor customer.
RwP