I know this a worn subject but, I am new to this forum. I have a 79 f250 crew cab that I would like to make a 4x4. I have 2 doner vehicles, the first a 78 bronco the other a 79 f250 4x4. I am pretty sure my frame on the non 2wd f250 is wider. May not be worth my while, or could be done, any help would be greatly appreciated.