Radiator arrived, perfect match, no leaks, but engine won't start, no fire at the plugs....Have fire at points, but not at plugs. Replaced ignition coil, engine running better than ever. My son drove it to school this morning....fact that thermostat installed incorrectly, coupled with pressure washing inside engine was the problem....Nothing quite like the sound of an old 6 cylinder going up the road...Lesson learned.