I've got a 2003 with the 5 lug pattern. The rims are 16" and I'd like to go to an 18" rim. I really like the factory rims and don't care for the aftermarket stuff. The problem is all of the factory 18s that I have found are 6 lug. Does anybody know of a factory 18 on 5 lug or what kind of problem it would be to convert my truck to 6 lug without using spacers?