Ok, to start off I have a 07 GMC Sierra 4 Door. It has a 4 - 6 drop on it and my front tires are getting wore out on the inside real bad. Now with that said, I took it to a local shop and was told I need new lower control arms that are 2 to 3 inches shorter than the stock ones. I did some research on it but cant seem to find the lower control arms anywhere. Does anyone know where I can find these lower control arms? Also, while I am at it, do I need to replace any parts from the lowering kit that wear out with time? any info will be greatly appreciated. Thank You.