I have a 38 1/2 ton truck & a few years back came across a set of front fenders. I was excited when I purchased them due to the condition but later found out the wheel opening was larger than my 1/2 ton fenders. Does anyone know why this is? are these even 38 fenders? The mounting pattern is the same as my 1/2 ton fenders but the wheel opening is slightly larger. I have attached pictures if it helps, the red is my original 1/2 ton fenders & the black are the ones I purchased. http://rides.webshots.com/album/580498666vmmses