my sugestion is to call the local dealer and ask em the bolt pattern of the 99's. If Ford kept the same pattern for the 90's trucks it should be 5 x 5.5". The new trucks use bigger rims so i would think that the pattern is different...i dont know..but instead of lookin for a kit...which would put you out lots of $ and not to mention involved to change out, keep an eye out for the rims for your style/year truck. They are a great set and i am sure you are not the only one to think of this, so might want to do some digging. Heck i even saw an Audi with Cobra R rims today! haha cant say it didnt look bad....hoped i helped!

Dan "Mudinford" MacDonald