Hello, I'm hoping you fellers can help me out here. I'm new to the highboy world and I'm in need of a new frame. I currently have a 76 f250 4x4 with divorced transfer case. I found a 1970 f250 4x4 with divorced transfer case rolling chassis. Will that fit my truck? Looks like cab mounts are different. I'm not sure about engine mounts also. I have a 429 in mine and I know that is not stock. Ant help would be greatly appreciated. Thanks