First I feel it is necessary to say that this is the best message forum I have ever come across on the internet. Does anyone know where I can find a K5 spoiler(wing) or front air dam without paying factory prices? I also got a lockrite for my van (89 3/4 ton, 10 bolt). I plan to install it this weekend. Any tips / tricks that you guys know of to make this painless. According to the instruction booklet it seems pretty straight forward. I will also be replacing the axle seals as well. Anybody use a lock rite? Ive heard good reviews but would like to hear what you guys think of it. I dont plan on off roading with the van (much!) but I need more traction up here in New England during the winter. I was told that GM started using 30 spline axle shafts in '89 on 10 bolts - can anyone confirm this?