The bumpers are on eBay for only $300 and I dont know if there are any mods because I haven't done mine yet but plan on doing it some time next week. But there should not be any mods. Also keep your eye out for a gutter mount basket rack that will fit out trucks. On a side note I just got done bolting my freshly painted cut out fenders on and I will be posting a pic soon on my album so be sure to check it out and I'll take a pic of the way I mounted my bumper so you can see