I think the 292 is 3" longer. I have been told you can just move the radiator to the front of the mount. There are smarter people here than me that can tell you that. I will have to move mine into the cab a little because of the 3" blower pulley. I had these mounts made. I think it was classic chassis but not sure. will have to go through my paperwork. I have heard that welding is not the best way to mount. Maybe box the frame? What about hot rivets?