I was checking out a website at offroad.com and found an article on the install of some 5100's. The picture shows the shaft boot on the bottom. This was apparantly on a 1st gen taco. Is there something different between 1st and second. I just put my 5100's on my 07 with no instructions included from DSMS and put them on the same direction the stock Billys came off. Am I missing something here??