Thanks guys. I'm thinking the 15x8 welds I have on the front now are 3.5 b.s. I can't remeber for sure.I have the paper with the part number (90series 58416m) from when I ordered them but it doesn't tell b.s. I did lower my truck slightly, around 2 inches via the coils. It doesn't rub currently but I guess it would if it was ever lowered more, right? My 87 truck did kinda set up higher in the front than a lot of trucks I've seen from the factory. It sits level and does not have a rake to it like my 85 and many other factory trucks I've seen. I also lowered the rear about 2 in. via shackles.