If you are asking what years would be stock/period correct, you've asked in the right place. If you want to modernize it, you should ask in the HiPo forum.
To keep it stock a '49-'53 engine, transmission and rear end would be needed. A '54 235 or 261 would be a period correct upgrade. A '55.2-'62 235 or 261 can be used with slight modification to the water pump.
