Thinking about doing a dually conversion on my 01 F250 4WD. The look is about the only reason why. I found a company that makes really nice front spacers and rear adapters, and can have them to my door for about $750. The main issue I have is that I just put 4 315/75/16 tires on the truck. I assume I would have to run a spacer between the wheels to make them fit? Not sure how that would work having rear adapters and spacers on it. I rarely tow real heavy (GVW 25-30k) mostly in the 15-20k range. Thoughts?