Hey all... was sittin' in a parking lot, and happened to notice a set of "dual wiper blades" on a chevy next to me... so instead of a pair of 2 on the windsheild, it was two sets of 2, only difference being the brackets the blades were mounted to. Anyone know where to get some of these? I can't even find them on the internet! My blades suck, and have tried a few different brands/types... but seem to be continually replacing them. Any ideas where I can get a hold of some of these?