What do you mean "it wont fit the factory holes"? ALL cjs from 76-86 are the same body dimensions, Your rear seat from any of those years should fit. Is the seat bracket on the bottom of the seat?? Some used diff brackets, so I could see diff hole locations, lower your fuel tank and drill new holes.. That is if you really want to have a back seat. I better correct myself, ALL cj-7,s from 76-86 are the same, but so are the "5,s" from 76-81 (I think that's when they stopped making them).