Measuring for a radiator

So, when you measure a rad, you go header to header, end of fins to end of fins and the core depth. The number of fins/inch, canted or straight tubes, how many tubes (3 row, 4 row) regular or maxi, oh and if it’s an OG chrysler rad, the lower portion of the top tank is a pressed pan OEM, so the rad will usually measure to that seam. Also advise stretching the lower mopar tank as most were offset(big top tank, small lower) that might be it…