They fit 1973-1986 GM and 1986-02 Ford fullsize trucks. I've had them on for about a year, but I've put less than 50 miles on them. They've seen about 5 track passes. I have the shims that come with them too. I'm asking $80 shipped.
**These are not those cheap $30 universal ones that are made for cars, these are actually longer and fit non flipped axles.**
http://static.summitracing.com/global/images/prod/large/lak-21715_w.jpg
http://store.summitracing.com/partdetail.asp?part=LAK%2D21715&view=32#Applicatio n