TA 340 6 pack in a 68 Dodge Dart vert

what engine was in this car, originally?
273 and I had a beefed up 360 for about 2 years before I spun a bearing.
340 6 pack engine been in about 2 years,
I am guessing radiator is original?
Water pump came off the 360 motor so the bracket to power steering matched up.